226 BULLETIN 18 7, UNITED STATES NATIONAL MUSEUM 



Himantodes, 74. 



cenchoa, 75. 



gemmistratiis, 75. 



gracillimus, 76. 



leucomelas, 75. 



tenuissimus, 77. 

 hobartsmithi, Tantilla, 135, 138, 213. 

 Homalocranion deppei, 138. 

 Homalocranium atriceps, 136. 



bocourti, 136. 



boulengeri, 139. 



jani, 139. 



michoacanense, 129. 



moestum, 139. 

 Homalopsis quinquevittatus, 38, 42. 

 horridus, Crotalus, 184. 

 hueyi, Thamnophis ordinoides, 159, 165, 



203. 

 humilis, Leptotyphlops humilis, 21, 22, 

 203. 



Rena, 22. 

 Hydrocalamus, 38. 

 Hydrophidae, 7, 176. 

 Hydrophis, 176, 177. 



fasciatAis, 177. 



granulatus, 177. 



laticaudus, 176. 



platurus, 176, 177. 

 Hydrops lubricus, 42. 



septemvittatus, 201. 

 hydrus, Hvdrus, 176. 

 Hydrus, 176, 177. 



caspius, 176. 



hydrus, 176. 



piaturuSj^ 176. 

 hypostema, Elaps fulvius, 172. 

 Hypsiglena, 8-10, 18, 72. 



affinis, 73, 208, 216. 



chlorophaea, 73. 



discolor, 113. 



dunklei, 73, 214. 



latifasciata, 113. 



ochrorhyncha janii, 73, 74, 206, 

 209, 212. 



ochrorhyncha ochrorhyncha, 73, 

 203, 205, 206, 210, 2i2, 213. 



ochrorhynchus, 72, 73. 



ochrorhynchus janii, 74. 



ochrorhynchus ochrorhynchus, 73. 



slevini, 72, 74, 203. 



torquata, 73, 74, 206, 209, 210, 213. 



torquata dunklei, 73. 



torquata torquata, 74. 



venusta, 73. 



Imantodes, 8, 10, 15, 17, 74, 75. 



cenchoa leucomelas, 75, 204, 211, 



214, 215. 

 gemmistratus, 75, 77, 204. 

 gracillimus, 75, 76, 207, 210. 

 latistratus, 75, 76, 207-210. 

 luciodorsus, 76. 

 splendidus, 76. 

 splendidus luciodorsus, 75, 76, 204, 



215. 

 splendidus oliveri, 75, 77, 204, 211. 



Imantodes splendidus splendidus, 75, 

 76, 216. 



tenuissimus, 75, 77, 204, 212, 216. 

 immaculata, Clelia clelia, 36, 205, 208. 

 immaculatus, Clelia clelia, 36. 

 imperator, Boa, 25. 



Constrictor constrictor, 25, 204- 

 208, 210-215. 

 imperialis, Coniophanes imperialis, 39, 

 40, 214, 215. 



Taeniophis, 40. 

 inaequifasciatus, Cochliophagus, 49. 

 incertus, Herpetodryas, 131. 

 indica, Dipsas, 49. 

 insigniarum, Eutaenia, 163. 

 intermedia, Salvadora, 124. 



Salvadora intermedia, 122, 124, 207. 

 intermedins, Pityophis, 60. 

 Ischnognathus, 156. 

 isozona, Contia, 130. 



Contia episcopa, 128. 



Sonora semiannulata, 127, 130, 203. 

 isthmicus, Atractus, 68. 



Geophis, 65, 68, 211. 



jani, Arizona, 107. 



Homalocranium, 139. 



Pituophis deppei, 105, 107, 205, 208, 

 210, 214. 



Tantilla, 134, 139, 204, 211. 

 janii, Hypsiglena ochrorhyncha, 73, 74, 

 206, 209, 212. 



Hypsiglena ochrorhynchus, 74. 



Liophis, 74. 

 jimenezii, Crotalus, 194. 



kennerlvi, Heterodon, 72. 



Heterodon nasicus, 71, 72, 205, 206, 

 212-214, 216. 

 kirnia, Tantilla, 140. 



Tantilla nigriceps, 140. 

 klauberi, Crotalus lepidus, 185, 191, 



205, 200, 208, 216. 

 knoblochi, Lampropeltis, 78, 81, 205. 



Lachesis barbouri, 181. 

 lachrymans, Lvgophis, 118. 



Rhadinaea, 115, 118, 204. 

 lactea, Stenorhina, 133. 



Stenorhina freminvillii, 133. 



Stenorrhina freminvillii, 132, 133, 

 204,207,211. 

 laeta, Elaphe, 60. 



Elaphe laeta, 58-60, 205, 206, 210, 

 214. 

 laetus, Diadophis punctatus, 48. 



Diadophis regalis, 47, 48, 205, 212, 

 213. 



Scotophis, 59. 

 laevis, Drvmobius (Eudryas), 53. 

 lambda, triraorphodon, 145, 147, 213. 

 Lampropeltis, 8-10, 17, 77. 



agalma, 85. 



alterna, 77, 79, 205. 



annulata, 82. 



boylii conjuucta, 80. 



