82 



Trans. Acad. Sci. of St. Louis. 



INDEX TO GENERA. 



Acris 14, 19 

 Agave 29-35 



Ambystoma 13-15, 17-18 

 Amphiuma 14-15, 18 

 Amyda 15,21 

 Ancistrodon 27 

 Anolis, 14-15, 22 

 Archinacella 50 



Bathyurus 51 

 Bellerophon 51 

 Bromelia 30 

 Bucania 51 

 Bufo 11, 19 

 Bumastus 51 



Caluromys Iv 

 Carinaropsis 39, 50 

 Carphophis 14-15, 26 

 Cataschisma, 43, 50 

 Ceraurus 51 

 Chelydra 20 

 Cheyletus 54 

 Chorophilus 15, 19 

 Chrysemys 14-15, 20-21 

 Cinosternum 20 

 Clemmys 12 



Cnemidoplioriis 14-16, 22-23 

 Coluber 14-15, 24-25 

 Conradella 50 

 Cro talus 11, 27 

 Crotaphylus 22 

 Cryptobranchus 14 

 Ctenodonta 39-40, 50 

 Cyclonema 44 

 Cyclophis 25 

 Cyrtoceras 51 

 Cyrtodonta 50 

 Cyrtolites 50 



Dalmanella 39, 50 

 Desmognathus 14-17 

 Diadophis, 15, 25 



Diemyctylus 16 

 Dinychus 54, 72-73 



Elaps 26 

 Engystoma 19 

 Eotomaria 51 



Farancia 26 



Gamasus 54, 67-68 

 Goniophora 50 

 Graptemys 15, 21 



Haldea 24 

 Helcionopsis 51 

 Helicotoma 44, 51 

 Hemidactylium 15, 17 

 Heterodon 11,26 

 Hindia 39, 50 

 Holopea 51 

 Hormotoma 45, 51 

 Hyla 14-15, 19 

 Hyletastes 54, 66 

 Hyolithes 46 



Isotelus 51 



Laelaps, 54, 64-66 

 Lampropeltis 14, 26 

 Lichenaria 39, 50 

 Lingula 50 

 Liopeltis 25 

 Liospira 40, 44, 51 

 Lophospira 39, 51 

 Lygosoma 23 



Macrocheles 54, 63-64 

 Macroclemmys 20 

 Modiolodon, 41, 50 

 Modiolopsis 42, 50 



Necturus 15, 18 



