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oatesii, Dryiophis
oatesii, Typhlops
oaxaca, Coryphodon
oaxacae, Tantilla
oaxacus, Crotalus basiliscus
obalskii, Tropidonotus
obesus, Atractus
oblectator, Pseudoxyrhopus
obliquus, Tropidonotus
oblitus, Psammophis
obscura, Elaps corallinus
obscura, Eutaenia sirtalis
obscura, Fleischmannia
obscura, Natrix compressicauda
obscura, Storeria occipitomaculata
obscuriventris, Lycodonomorphus
obscuriventris, Lycodonomorphus whytii
obscuro, Calamaria
obscurus, Crotalus willardi
obscurus, Hydrophis ,
obscurus, Micrurus
obscurus, Simotes
obscurus, Thamnophis eques
obscurus, Tretanorhinus nigroluteus
obscurus, Trimeresurus
obscurus, Tropidonotus piscator
obscurum, Triglyphodon fuscum
obsoletus, Coluber
obsoletus, Coniophanes fissidens
obsoletus, Pantherophis , ,
obstrusus, Mesotes
obtusa, Letheobia ,
obtusa, Rhadinaea ,
obtusa, Vipera
obtusatus, Homalopsis
obtusicaudus, Elaps
obtusiceps, Boa
obtusirostris, Atractus
obtusirostris, Corallus
obtusirostris, Elaps
obtusus, Coluber ,
obtusus, Psomophis
obtusus, Telescopus
obtusus, Typhlops
obtutsatus, Coluber
occabus, Geophis
occidentala, Tropidodipsas
occidentalis, Ahaetulla
occidentalis, Arizona elegans
occidentalis, Atractus
occidentalis, Boavus ,
occidentalis, Boa
occidentalis, Boiga blandingii
occidentalis, Boiga dendrophila
occidentalis, Coelopeltis monspessulana
occidentalis, Diadophis amabilis
occidentalis, Dispholidus typus
occidentalis, Dromicus
occidentalis, Drymobius margaritiferus
occidentalis, Leptophis
occidentalis, Leptotyphlops
occidentalis, Madagascarophis colubrinus
occidentalis, Naja nigricollis
occidentalis, Namibiana ,
occidentalis, Notechis scutatus
occidentalis, Pelias
occidentalis, Philothamnus natalensis
occidentalis, Pliocercus elapoides
occidentalis, Psammophis , ,
occidentalis, Psammophis subtaeniatus
occidentalis, Pseudalsophis
occidentalis, Thrasops
occidentalis, Trimeresurus
occiduus, Atropoides ,
occiduus, Bothrops nummifer
occipitale, Rabdion
occipitale, Rhinostoma
occipitalis, Ablabes
occipitalis, Calamaria
occipitalis, Chionactis
occipitalis, Elaps
occipitalis, Enicognathus
occipitalis, Herpetodryas
occipitalis, Heteroliodon
occipitalis, Natrix
occipitalis, Oxyrhopus
occipitalis, Ophibolus doliatus
occipitalis, Pseudoxyrhopus
occipitalis, Taeniophallus ,
occipito-luteum, Brachyruton
occipito-maculatas, Coluber
occipitoalbum, Rabdosoma
occipitoalbus, Atractus
occipitolineata, Lampropeltis calligaster
occipitoluteum, Brachyruton
occipitomaculata, Storeria
occipitomaculatus, Coluber
occitanus, Michauxophis
Oceanius
ocellata, Boa
ocellata, Boiga
ocellata, Cenchris
ocellata, Echidna
ocellata, Hemidipsas
ocellata, Hydrophis
ocellata, Leptodira
ocellata, Lycophidion laterale
ocellata, Natrix
ocellata, Python molurus
ocellata, Silybura
ocellata, Stenorhina degenhardti
ocellata, Thamnophis cyrtopsis
ocellata, Tyria
ocellata, Uropeltis
ocellata, Vipera ,
ocellata, Vipera aspis
ocellata, Zamenis viridiflavus
ocellatum, Tomodon
ocellatus, Coluber
ocellatus, Echis
ocellatus, Echis carinatus
ocellatus, Enygrus
ocellatus, Erythrolamprus
ocellatus, Madagascarophis
ocellatus, Oligodon
ocellatus, Psammophylax
ocellatus, Simotes
ocellatus, Tomodon
ocellatus, Uropeltis
ocellatus, Xenodon
ocellus, Hydrophis inornatus
ochracea, Boiga
ochracea, Silybura
ochracea, Vipera berus
ochracea, Vipera coronis leopardina
ochraceus, Dipsas
ochraceus, Micropisthodon
ochraceus, Typhlops
ochrorhyncha, Hypsiglena ,
ochrorhynchus, Hypsiglena
ochrosetrus, Atractus
octolineata, Dendrophis
octolineatum, Amphiesma
octolineatus, Elaps
octolineatus, Oligodon
octolineatus, Tropidonotus
ocularis, Typhlops ,
oculotemporalis, Atractus
oculus cati, Coluber
OCYOPHIS
Odontomus ,
odysseus, Psammophis
oenpelliensis, Morelia
oenpelliensis, Python
Ogmius
OGMODON
OGMOPHIS
ohnoi, Pseudonaja
okahandjana, Glauconia
okinavensis, Ovophis , ,
okinavensis, Trimeresurus
oldesloensis, Pelias occidentalis
oldhami, Chlorophis
olduvaiensis, Bitis ,
olfersii, Coluber ,
olfersii, Philodryas
olguni, Pelias ,
oligoanellatus, Micrurus
oligocenicus, Eoanilius
oligocenicus, Nebraskophis
OLIGODON
oligodon, Calamaria
oligolepis, Bothriopsis ,
oligolepis, Gerrhopilus
oligolepis, Lachesis bilineatus
oligolepis, Liophis
oligolepis, Philodryas
oligolepis, Typhlops
oligostichus, Enulius
Oligotropis
oligozona Cornella formosa
oligozonatus, Lycodon aulicus
oligozonatus, Sibynomorphus
Olisthenes
olivacea, Coronella
olivacea, Demansia
olivacea, Dendrophis
olivacea, Ficimia
olivacea, Liasis
olivacea, Liophis typhlus
olivacea, Megaera
olivacea, Natriciteres
olivacea, Typhlina
olivaceus, Ablabes
olivaceus, Boaedon
olivaceus, Coluber
olivaceus, Holuropholis
olivaceus, Homalopsis
olivaceus, Leptophis
olivaceus, Liasis ,
olivaceus, Lycodon
olivaceus, Megablabes
olivaceus, Onychophis
olivaceus, Ramphotyphlops , ,
olivaceus, Rhabdops
olivaceus, Trimesurus
olivaceus, Tropidonotus
oliveri, Ahaetulla
oliveri, Dendrelaphis
oliveri, Imantodes splendidus
oliveri, Micrurus distans
olmec, Atropoides ,
olmec, Porthidium
olssoni, Micrurus
olympia, Thamnophis leptocephala
omanensis, Echis
ombonii, Coluber
omiltemana, Geophis
omiltemana, Rhadinaea
omiltemanus, Crotalus
omiltemanus, Dromicus
omiltemanus, Geophis
omissus, Elaps
OMOADIPHAS
oneilli, Sibynomorphus
Onychocephalus
Onychocephalus, nigro-lineatus
Onychophis ,
OOCATOCHUS ,
oolitica, Tantilla
Oophilositum
Opetiodon
Opheodris
OPHEODRYS
Opheomorphus
Ophibolus , ,
Ophidioniscus
Ophidion
Ophidium
Ophielaps
Ophinectes
Ophiomorphus
ophiophagus, Lycodon
ophiophagus, Trimeresurus
OPHIOPHAGUS
Ophirhina
Ophirina
Ophis
ophiteoides, Lycodon
Ophites ,
Ophrias
OPHRYACUS ,
Ophryas
ophryomegas, Bothrops
ophryomegas, Porthidium ,
Ophthalmidion
Ophthalmidium
Ophthalmophis
Opisthiodon
opisthopachys, Typhlops
Opisthoplus
opisthorhodus, Cylindrophis
opisthotaenius, Liophis
OPISTHOTROPIS
Oplocephalus
oppelii, Coluber
oppelii, Natrix
oppelii, Tropidonotus
oppellii, Coluber
optata, Natrix
optatum, Amphiesma
orarius, Thamnophis proximus
orbensis, Pelias occidentalis
orbiculata, Boa
orcesi, Atractus
orcesi, Micrurus steindachneri
orcutti, Lichanura
ordensis, Denisonia
ordensis, Suta
ordinata, Boa
ordinatus, Coluber
ordinoides, Thamnophis ,
ordinoides, Tropidonotus
oreas, Dipsas
oreas, Leptognathus
oreganus, Crotalus ,
oregonensis, Ogmophis ,
oregonus, Crotalus
orellanensis, Helagras
OREOCALAMUS
OREOCRYPTOPHIS ,
Oreophis ,
orestes, Tomodon
organica, Chionactis palarostris
orientale, Dinodon
orientalis, Atractaspis congica
orientalis, Caudisona
orientalis, Coluber
orientalis, Coronella
orientalis, Disteira
orientalis, Gastropyxis
orientalis, Leimadophis andreae
orientalis, Liasis stimsoni
orientalis, Lystrophis dorbignyi
orientalis, Ophites
orientalis, Oxyrhopus melanogenys
orientalis, Psammophis
orientalis, Psammophis subtaeniatus
orientalis, Trimeresurus
orientalis, Tropidonotus
orientalis, Vipera kaznakowi
ORIENTOCOLUBER
orina, Rhadinaea
orizabensis, Morenoa
orlovi, Pelias ,
orlovi, Vipera
ornata, Aturia
ornata, Boa
ornata, Calamaria
ornata, Chitulia ,
ornata, Chrysopelea
ornata, Coluber
ornata, Denisonia
ornata, Dipsas
ornata, Eutaenia
ornata, Ficimia
ornata, Furina
ornata, Grayia
ornata, Leptodeira
ornata, Liophis reginae
ornata, Megaera
ornata, Mesocoronis coronis
ornata, Pelamis
ornata, Pseudoboa
ornata, Tropidonotus piscator
ornata, Vipera berus
ornaticeps, Amphiesmoides
ornaticeps, Elapocephalus
ornaticeps, Tropidonotus
ornatissima, Chrysopelea ornata
ornatissima, Liophis reginae
ornatissima, Prosymna
ornatissimus, Elaps
ornatissimus, Hydrops martii
ornatissimus, Micrurus
ornatum, Lycophidion
ornatum, Xiphosoma
ornatus, Bothrops
ornatus, Comastes
ornatus, Crotalus
ornatus, Dromicus
ornatus, Elaps
ornatus, Enicognathus
ornatus, Hoplocephalus
ornatus, Hydrophis ,
ornatus, Liophis
ornatus, Macrophis
ornatus, Masticophis
ornatus, Oligodon
ornatus, Philothamnus
ornatus, Tropidonotus
ornatus, Tropidonotus himalayanus
ornithophaga, Elaphe carinata
orophias, Boa
Orophias
Orophis
orophrias, Trigonocephalus
orri, Elapognathus
orsinii, Vipera
ortenburgeri, Coluber
ORTHRIOPHIS ,
ortoni, Micrurus hemprichi
ortonii, Boa
ortonii, Leptophis
oryzivorus, Coluber
osbornei, Bothrops
osborni, Elaphe
Osceola
oshimai, Zaocys
osmanhilli, Lycodon
otavioi, Bothrops
otthianus, Coelopeltis leopardinus
Ottobreus
oularjawa, Natrix
oularsawa, Coluber
ourdia, Natrix
oursi, Ithycyphus
ovandoensis, Micrurus nigrocinctus
ovivorus, Coluber ,
OVOPHIS ,
oweni, Aparallactus jacksonii
oweni, Palaeophis
owenii, Ablabes
owenii, Coluber
oxiana, Naja ,
oxiana, Tomyris
Oxibelis
oxijcephalum, Gonijosoma
oxirhynchus, Pseudo-typhlops
OXYBELIS
Oxybelus
Oxycalamus
oxycephalum, Gonyosoma ,
oxycephalum, Pseudorabdion
oxycephalum, Rhabdosoma
oxycephalus, Coluber ,
Oxykukrius
Oxynatrix
oxynotus, Streptophorus
Oxyorrhos
Oxyreedus
OXYRHABDIUM
oxyrhachis, Dryinoides
Oxyrhina
oxyrhinchus, Rhinophis
oxyrhincus, Rhinophis
oxyrhinus, Typhlops
OXYRHOPUS ,
oxyrhynchos, Rhinophis
oxyrhynchus, Anguis
oxyrhynchus, Dryinus
oxyrhynchus, Psammophis
oxyrhynchus, Pseudotyphlops
oxyrhynchus, Rhamphiophis
oxyrhynchus, Rhinophis ,
oxyrhynchus, Uromacer
Oxyropus
Oxyrrhina ,
Oxyrrhopus ,
oxyrrhynchus, Anguis
oxyrynchus, Anguis ,
Oxytyphlops
OXYURANUS
Oxyus
ozakiae, Ramphotyphlops ,
