324 



Trans. Acad. Sci. of St. Louis. 



INDEX TO GENERA. 



Ablades 187 

 Abranchus 70 

 Acontias 204-206 

 Acris 100-101, 253 

 Agama 129, 131, 133 

 Agkistrodon 198, 204, 206, 255 

 Amblystoma 72-73, 75, 77, 81 

 Ambystoma 72-73, 75, 77, 84, 252 

 Ameiva 139 

 Amphiuma 68-69, 252 

 Amyda 249, 251, 256 

 Ancistrodon 206 

 Andrias 70 



Anguis 136, 155, 162, 172, 175, 190 

 Aromochelys 230-233, 255 

 Aspidonectes 251 



Bascanion 150, 169, 171-172, 207, 



254 

 Bascanium 169, 171-172 

 Batrachoseps 80 

 Boa 175, 206 

 Brachyorrhos 194 

 Bufo 98, 253 



Cat'cilia 136 



Calamaria 168, 194 



Calamita 105, 108 



Callinia 249, 251 



Calopisma 192 



Camarataxis 73 



Carphopbiops 194 



Carphophis 150, 193-194, 255 



Caudisona 209-210, 212 



Celuta 194 



Cenchris 204, 206 



Chamaesaura 136 



Chelonura 226, 228 



Chelydra 226, 255 



Chilophr3'ne 98 



Chlorosoma 189 



Chondrotus 72 



Chorophilus 100, 102-103, 253 



Chrysemys 234-236, 238-241, 255 



Chrysodonta 69 



Cinosternum 231 



Cistudo 231, 245, 247-248 



Clemmys 236, 238-239, 242-243 



Cnemidophorus 254 



Cobra 199 



Coluber 154-156. 162, 164-165, 

 168-169, 171-173, 175, 177-183, 

 185, 187, 189-190, 192, 194, 

 196, 204 



Conocephalus 168 



Contia 189, 190 



Coronella 183, 185, 187 



Coryphodon 169, 171 



Coiileuvre 156, 192 



Crotalinus 209, 212 



Crotalophorus 209-210, 212 



Crotalus 204, 209-210, 212, 255 



Crotaphytus 129, 253 



Cryptobrancbiis 70, 252 



Cyclophis 189, 190 



Cylindrosoma 83, 85, 89 



Daboya 216 

 Dendrophyas 108-109 

 Desmiostoma 73 

 Desmodactylus 80 

 Diadophis 150. 188, 195, 255 

 Diemictyhis 94 

 Diemyctylns 94, 96, 253 



Echeveria 20-21, 25 



Elaphe 150, 176-182, 254 



Elaphis 177-179, 181 



Elaps 146, 196-197, 211, 255 



Emys 226, 231, 236, 239-240, 242- 



243, 245, 247 

 Emysaura 226 

 Emysaurus 228 

 Engystoma 125, 253 

 Eumeces 140, 142-143, 253 

 Euprepis 140 

 Eutaenia 159, 161-162 

 Eutainia 159. 161-162 ; 



