218 BULLETIN 18 7, UNITED STATES NATIONAL MUSEUM 



antonii, Rhinocheilus, 120. 



Rhinocheilus antonii, 120, 208, 210, 

 213. 



Rhinocheilus lecontei, 120. 

 apiata, Stenorhina degenhardti, 133. 



Stenorhina degenhardtii, 133. 



Stenorhina fremiuvillii, 133. 



Stenorrhina freminvilhi, 132, 133, 

 211, 215, 216. 

 apiatus, Elaps, 172. 



Micrurus affinis, 170, 172, 204. 

 Aploaspis, 184. 

 arabdotus, Thamnophis, 168. 

 arcifera, Coronella micropholis, 83, 



Lampropeltis triangnhim, 78, 79, 

 83, 206, 207, 209, 211, 215. 

 argus, Pseustes poecilonotus, 114, 204, 

 211, 213-215. 



Spilotes, 114. 

 Arizona, 8, 10, 17, 32. 



arizonae arizonae, 6, 32. 



arizonae occidentalis, 6, 33. 



elegans, 32, 33. 



elegans elegans, 6, 32, 205, 



elegans occidentalis, 6, 32, 33, 203, 

 205, 213. 



jani, 107. 



lineaticollis, 108. 

 arizonae, Arizona arizonae, 6, 32, 



Coluber, 32. 



Diadophis regalis, 48. 

 asper, Bothrops atrox, 180, 204, 211, 

 213-216. 



Trigonocephalus, 180. 

 aspinosus, Anomalepis, 200, 

 Asthenognathus, 49. 

 Atomarchus, 158. 



multimaculatus, 158, 166, 

 Atractus, 65. 



isthmicus, 68. 

 atriceps, Homalocranium, 136. 



Tantilla, 135, 136, 205, 210, 213, 

 atrocinctus, Scolecophis, 128. 

 Atropos, 183. 



mexicanus, 182. 



nummifer, 182. 

 atrox, Bothrops, 180. 



Crotalus, 188, 189, 203, 205, 208, 

 210, 211, 213, 214, 



Trimeresurus, 180. 

 auribundus, Spilotes pullatus, 131. 

 aurifer, Bothrops nigroviridis, 180, 182, 

 205. 



Thamnocenchris, 179, 182. 

 aurifera, Bothrops nigroviridis, 182. 

 aurigulus, Drvmobius, 94. 



^Masticophis, 93, 94, 203. 

 australis, Masticophis taeniatus, 93, 97, 

 206, 207, 209, 212. 



bailevi, Clelia, 103. 



bxyrhopus, 103, 215. 

 Rhadinaea hesperia, 116, 117, 207. 

 bairdi, Elaphe, 58, 205. 

 bairdii, Salvadora, 122, 123, 206, 208- 

 210, 212, 215, 216. 



bakewelli, Leptotyphlops, 24, 



Leptotvphlops phenops, 20, 24, 205, 

 207, "208, 210. 

 bancroftae, Sonora, 127, 128, 203, 

 barbouri, Bothrops, 180, 181, 207. 



Coluber, 94. 



Lachesis, 181. 



Masticophis, 93, 94, 203. 



Trimeresurus, 181. 

 baronis-miiUeri, Tropidonotus, 164. 

 Bascanion, 37. 



anthonyi, 94. 



flagellum frenatum, 95. 



lineatus, 95. 



suboculare, 97. 



subocularis, 60. 



taeniatus, 97, 

 Bascanium piceum, 95. 



semilineatum, 94. 

 basilisca, Caudisona, 189. 

 basiliscus, Crotalus, 186, 189, 206, 208, 



209, 211, 213, 

 basimaculatus, Typhlops, 19, 214. 

 bellona, Churchillia, 107, 

 Bellophis, 77. 



zonatus, 77, 85. 

 Bergenia, 132. 



mexicana, 132. 

 bernadi, Elaps, 172. 



Micrurus, 170, 172, 208, 212. 

 bernoullii, Leptognathus, 152. 

 bertholdi, Dipsas, 200. 



Sibon, 200. 



Xenodon, 153. 

 bicolor, Bothrops, 180, 181, 204. 



Dirosema, 67. 



Geophis, 65-67, 206, 208. 



Loxocemus, 27, 204, 207, 209, 210. 



Pliocercus, 109, 110, 212, 215. 



Trimeresurus, 181. 

 bifasciatus, Streptophorus, 99. 

 bilineatus, Agkistrodon, 6, 177, 178, 204, 

 206-211, 213, 216. 



Ancistrodon, 177. 



Masticophis, 93, 94, 205, 206, 208, 

 210, 211, 213, 216.. 



Trigonocephalus, 177. 

 bimaculata, Tantilla, 137. 

 bipunctatus, Coniophanes bipunctatus, 



38. 

 biscutata, Dipsas, 145, 146. 

 biscutatus, Trimorphodon biscutatus, 



146, 204, 209, 211. 

 biserialis, Conopsis, 45, 206, 208, 209, 

 biseriatus, Coniophanes bipunctatus, 38, 



39, 204, 215, 

 bizona, Erythrolamprus, 200, 

 blanchardi, Diadophis regalis, 48. 



Geophis, 66, 67, 211^215. 



Lampropeltis polyzona, 83. 



Lampropeltis triangulum, 78, 83, 

 207, 216. 



Natrix rhombifera, 154, 155, 210, 

 213-215. 



Sonora semiannulata, 127, 129, 205. 



