214 BULLETIN 18 7, UNITED STATES NATIONAL MUSEUM 



Crotalus tigris 



Crotalus triseriatus pricei 



Crotalus viridis viridis 



Crotalus viridis oreganus 

 Crotalus willardi 



TABASCO 



Typhlops basimaculatus 

 Scaphiodontopbis albonuchalis 

 Adelphicos quadrivirgatus visoninus 

 Clelia clelia clelia 

 Coniophanes fissidens fissidens 

 Coniophanes imperialis clavatus 

 Dendrophidion vinitor 

 Dipsas maxillaris 



Dryadophis melanolomus veraecrucis 

 Drymarchon ^corais melanurus 

 Drymobius margaritiferus margariti- 



ferus 

 Imantodes cenchoa leucomelas 

 Lampropeltis triangulum polyzona 

 Leptodeira annulata polysticta 

 Leptophis mexicaiius mesicanus 

 Leptophis occidentalis praestans 

 Ninia diademata diademata 



Ninia sebae sebae 



Oxybelis acuminatus 



Pliocercus elapoides elapoides 



Pliocercus elapoides laticollaris 



Pseustes poecilonotus argus 



Sibon nebulatus 



Spilotes pullatus mexicanus 



Tropidodipsas sartorii sartorii 



Xenodon mexicanus 



Natrix rhombifera rhombifera 



Thamnophis sauritus chalceus 



Thamnophis sumiclirasti sumiclirastl 



Micrurus affinis alienus 



Micrurus elegans elegans 



Bothrops atrox asper 



Bothrops mexicanus 



Crotalus durissus durissus 



TAMAULIPAS 



Lepto typhi ops dulcis 

 Leptotyphlops myopicus myopicus 

 Constrictor constrictor imperator 

 Coluber constrictor stejnegeri 

 Coniophanes imperialis imperialis 

 Dryadophis melanolomus veraecrucis 

 Drymarchon corals erebennus 

 Drymobius margaritiferus margariti- 

 ferus 

 Elaphe flavirufa flavirufa 

 Elaphe laeta laeta 

 Heterodon nasicus kennerlyi 

 Hypsiglena dunklei 

 Lampropeltis thayeri 

 Lampropeltis triangulum annulata 

 Leptodeira annulata septentrionalis 

 Leptodeira maculata 

 Leptophis mexicanus mexicanus 

 Masticophis flagellum testaceus 

 Masticophis mentovarius mentovarius 



Masticophis taeniatus ruthveni 

 Opheodrys aestivus 

 Oxybelis acuminatus 

 Pituophis catenifer sayi 

 Pituophis deppei jani 

 Pliocercus elapoides celatus 

 Salvadora lineata 

 Spilotes pullatus mexicanus 

 Tantilla nigriceps fumiceps 

 Natrix erythrogaster transversa 

 Natrix rhombifera blanchardi 

 Storeria dekayi texana 

 Thamnophis marciana 

 Thamnophis sauritus proximus 

 Thamnophis sirtalis parietalis 

 Micrurus fltzingeri microgalbineus 

 Micrurus fulvius tenere 

 Crotalus atrox 



Crotalus scutulatus scutulatus 

 Crotalus triseriatus miquihuanus 



TLAXCALA 



Toluca lineata lineata 

 Thamnophis scalaris scaliger 



Crotalus scutulatus salvini 

 Sistrurus ravus 



VERACRUZ 



Typhlops basimaculatus 

 Leptotyphlops myopicus myopicus 

 Leptotyphlops phenops phenops 



Constrictor constrictor imperator 

 Scaphiodontopbis albonuchalis 

 Scaphiodontopbis cyclurus 



