17 



Manculus quadridigitatus 109 

 Manculus quadriditatus 34 

 Masticophis 20 



Masticophis flagellum 8, 10, 12,44 



Masticophis flagellum frenatus 3, 88 



Masticophis flagellum piceus 48, 49 



Masticophis lateralis 3 



Masticophis lateralis lateralis 48, 49 



Masticophis taeniata 8 



Megalobatrachus 40, 109 



Megalobatricus 34 



Megalotatricus 36 



Megamolgophis 84 



Meniscognathus ulumani 65 



Micrablepharus 66 



Microblepharus 65 



Microbrachis 84 



Microhyla carolinensis 89 



Microhyla mazatlanensis 89 



Microhyla olivacea 89 



Micrurus fulvius 100 



Micrurus nigrocinctus babaspul 100 



Micrurus nigrocinctus coibensis 100 



Micrurus nigrocinctus divaricatus 100 



Micrurus nigrocinctus melanocephalus 100 



Micrurus nigrocinctus mosquitensis 100 



Micrurus nigrocinctus nigrocinctus 100 



Micrurus nigrocinctus zunilensis 100 



Micrurus ruatanus 100 



Mimometophon sapperi 98 



Molge vulgaris 79 



Moschops 86 



Matrix sipedon erythrogaster 3 1 

 Matrix sipedon sipedon 3 1 

 Matrix sipedon transversa 3 1 

 Matrix taxispilota 3 1 

 Mecturis 40 

 Mecturus 34-42, 109 

 Meusticurus 65, 67 

 Meusticurus apodemus 82 

 Miceforonia columbianus 53 

 Miceforonia festae 53 

 Miceforonia flavomaculata 53 

 Miceforonia montium 53 

 Miceforonia nana 53 

 Miceforonia wettsteini 53 

 7VzVz/a at rat a 60 



7Vm/a 98 

 Morops tropidolepis 72 

 Motophthalmus 109 



Oedipina 34 

 Oedipina alfaroi 1 09 

 Oedipina bonitaensis 109 

 Oedipina collaris 1 09 

 Oedipina complex 1 09 

 Oedipina cyclocauda 1 09 

 Oedipina elongata 1 09 

 Oedipina elongatus 5, 109 

 Oedipina gracilis 109 

 Oedipina ignea 5, 109 

 Oedipina inusitata 109 

 Oedipina longissima 1 09 

 Oedipina pacificensis 1 09 

 Oedipina parviceps 1 09 

 Oedipina poelzi 1 09 

 Oedipina salvadorensis 5 

 Oedipina syndactyla 1 09 

 Oedipina taylori 5, 109 

 Oedipina uniformis 109 

 Oedipinola 34 

 Oedipus 109 

 Oedipus adspersa 41 

 Oedipus elongatus 5 

 Oedopinola 41 

 Ogmophis arenarum 9 

 Ogmophis compactus 9 

 Ogmophis oregonensis 9 

 Ololygon 53 

 Onychodactylus 34, 109 

 Ophibolus getulus eiseni 107 

 Ophiogonomon 65 

 Ophiomorus 66 

 Ophisaurus 25, 66 

 Ophisaurus harti 87 

 Ophisaurus ventralis 87 

 Opipeuter 65 

 Opisthotriton kayi 1 09 

 Oreobates quixensis 53 

 Ostodolepsis 84 

 Oxybelis aeneus 57 



Pachytriton 1 09 

 Pachytriton brevipes 34 

 Paleothyris acadiana 86 



