224 



BULLETIN 187, UNITED STATES NATIONAL MUSEUM 



Enulius sumichrasti, 61, 204, 211. 



unicolor, 61, 204, 207, 209, 211. 

 enyo, Caudisona, 190. 



Crotalus, 186, 188, 190, 203. 

 ephippiata, Leptodeira, 86, 88, 213. 

 ephippifer, Elaps, 174. 



Micriirus, 170, 174, 211. 

 Epiglottophis, 105. 

 Epirhlna, 44. 



tessellata, 44, 45. 

 episcopa, Sonora, 127, 128, 210. 



Sonora episcopa, 128. 

 episcopum, Lamprosoma, 128. 

 epistema, Elaps, 172. 



Elaps fulvius, 171. 

 eques. Coluber, 162. 



Eutaenia, 162. 



Thamnophis, 162. 



Thamnophis eques, 160, 162, 206- 

 209, 211-213, 215, 216. 

 erebennus, Drvmarchon corais, 54, 205, 

 207, 212, 214, 215. 



Spilotes, 54. 

 errans, Thamnophis ordinoides, 160, 



165, 205, 206. 

 Erythrolamprus, 200. 



aesculapii, 200. 



bizona, 200. 



grammophrys, 118. 



guentheri, 200. 



venustissimus, 200. 



venustissimus var. D, 200. 

 erythrura, Sonora, 128. 

 Eryx braminus, 19. 

 esterensis, Chilomeniscus stramineus, 



34, 203. 

 Eteirodipsas, 145. 

 Eudryas, 53, 125. 



boddaerti mexicanus, 53. 



slevini, 52. 

 Eurypholis mayae, 101. 

 euryxanthus, Elaps, 169. 



Micruroides, 169, 205, 213. 

 Eutaenia angustirostris, 161. 



chrysocephalus, 161. 



cyrtopsis, 162. 



cyrtopsis fulvus, 168. 



eques, 162. 



flavilabris, 163. 



hammondii, 162. 



insigniarum, 163. 



macrostemma, 163. 



macrostemma megalops, 163. 



marciana, 164. 



megalops, 163. 



phenax, 165. 



praeocularis, 168. 



pulchrilatus, 162. 



rutiloris, 166. 



scalaris, 167. 



sumichrasti, 168. 

 Exelencophis, 7, 10, 13, 62. 



nelsoni, 62, 210. 

 Exorhina, 44, 45. 



maculata, 44. 

 exsul, Crotalus, 188, 191, 203. 



fallax, Pseudodipsas, 72, 74. 



fasciata, Tropidodipsas, 149-151, 215, 216. 



Virginia, 150, 151. 

 fasciatus, Chilomeniscus stramineus, 34. 



Dipsadomorus, 50. 



Hydrophis, 177. 



Leptognathus, 50, 150. 

 fasciolata, Trimorphodon, 146, 147, 209. 

 Ficimia, 8-10, 13, 62. 



desertorum, 71. 



olivacea, 62, 63. 



olivacea olivacea, 62, 211, 215. 



olivacea streckeri, 62, 63, 207, 210. 

 215. 



ornata, 63. 



publia, 62, 63, 204, 207, 211, 212, 

 215,216. 



quadrangularis, 71. 



ruspator, 62, 63, 207, 209. 



streckeri, 63. 



variegata, 62, 63, 204, 211. 

 fischeri, Tropidodipsas, 149-151. 

 fissidens, Coniophanes fissidens, 38, 39, 

 214, 215. 



Coronella, 38, 39. 

 fistulosus, Drymobius margaritiferus, 



56, 57, 206-211, 213. 

 fitzingeri, Elaps, 174. 



Elaps fulvius, 174. 



Micrurus, 174. 



Micrurus fitzingeri, 171, 174, 206, 

 207, 209. 

 flagellum, Masticophis flagellum, 92. 

 flavigularis, Masticophis flagellum, 96, 



Psammophis, 96. 

 flavilabris, Eutaenia, 163. 

 flavirufa, Elaphe, 58. 



Elaphe flavirufa, 58, 59, 204, 211, 

 212, 214-216. 

 flavirufus, Coluber, 59. 

 flavitorques, Enulius, 61. 

 forbesi, Rhadinaea, 116, 117, 215. 



Trimorphodon, 146, 147, 212. 

 forreri, Leptophis diplotropis, 90, 91, 210. 

 freminvillii, Stenorhina, 132. 



Stenorhina freminvillii, 132. 



Stenorrhina freminvillii, 132, 207, 

 211. 

 frenata, Leptodeira, 86, 88, 215. 

 frenatum, Bascanion flagellum, 95. 



Sibon, 88. 

 frenatus, Elaphe, 95. 



Herpetodryas, 95. 



Masticophis flagellum, 95. 

 frontalis, Conopsis, 112. 



Pseudoficimia, 112, 206-210, 213. 



Toluca, 112. 

 fulgidus. Coluber, 102. 



Oxybelis, 101, 102, 204, 211, 216. 

 fuliginosus, Zamenis lateralis, 95. 

 fulvius, Elaps, 173. 

 fulvivittis, Rhadinaea, 6, 119. 

 fulvus, Eutaenia cyrtopsis, 168. 



Thamnophis sumichrasti, 161, 168. 

 fumiceps, Scolecophis, 140. 



Tantilla nigriceps, 135, 140, 214. 

 fuscus, Geophis, 67. 



