230 BULLETIN 187, UNITED STATES NATIONAL MUSEUM 



microgalbineus, Micrurus fitzingeri, 171, 



174,213,214. 

 Microphis, 5. 



quinqueliniatus, 132. 

 microphthalmus, Oxybelis, 102. 

 microstomus, Typhlops, 19, 215. 

 Micruroides, 7, 10, 15, 169. 



euryxanthus, 169, 206, 213. 

 Micrurus, 8-10, 15, 169. 



affinisaffinis, 171, 211, 212, 215. 



affinis alienus, 171, 172, 204, 211, 

 214. 



affinis apiatuP, 170, 172, 204. 



affinis mayensis, 171, 172, 212, 216. 



affinis stantoni, 171. 



bernadi, 170, 172, 208, 212. 



browni, 16&-172, 207. 



diastema diastema, 170, 172, 173, 

 206. 



diastema distans, 170, 173, 206, 208, 

 210, 213. 



diastema michoacanensis, 170, 173, 

 207, 209. 



elegans elegans, 170, 173, 214, 216. 



ephippifer, 170, 174, 211. 



fitzingeri, 174. 



fitzingeri fitzingeri, 171, 174, 206, 

 207, 209. 



fitzingeri microgalbineus, 171, 174, 

 213 214. 



fulvius ten'ere, 170, 174, 205, 214. 



laticollaris, 169, 170, 175, 207, 209, 

 212. 



latifasciatus, 170, 175, 204. 



nigrocinctus ovandoensis, 170, 176, 

 204. 



nigrocinctus zunilensis, 170, 176, 

 204. 



nuchalis, 176. 



nuchalis nuchalis, 170, 176, 204, 

 211. 



nuchalis taylori, 171, 176, 207. 



spixii, 169. 

 mikani, Dipsas, 49. 

 miliarius, Crotalus, 198. 

 Mimometopon, 31. 



sapperi, 31. 

 miniata, Tantilla, 136, 139, 216. 

 miniator, Tantilla, 139. 

 miquihuanus, Crotalus pricei, 196. 



Crotalus triseriatus, 186, 197, 210, 

 214. 

 mitchellii, Caudisona. 192. 



Crotalus mitchellii, 187, 192, 203. 

 modesta, Ahaetulla, 91. 

 moesta, Tantilla, 134, 139, 216. 

 moestum, Homalocranium, 139. 

 mokeson, Agkistrodon, 177. 



Cenchris, 177. 

 molossus, Crotalus, 193. 



Crotalus molossus, 186, 193, 206, 

 210, 213. 

 montana, Rhadinaea, 116, 118, 210. 

 Morenoa, 63. 



orizabensis, 53, 66. 

 morgani, Tantilla, 135, 140, 212. 



morleyi, Ninia sebae, 99, 100, 204, 212, 



216. 

 mosaueri, Sonora, 127, 129, 203. 

 multifasciata, Coronella, 85. 



Lampropeltis multicincta, 85. 

 multifasciatus, Petalognathus, 49, 50. 

 multimaculata, Crotalus lugubris, 193. 

 multimaculatus, Atomarchus, 158, 166. 



Thamnophis, 166. 

 murinus, Enulius, 61. 

 mutabilis, Sonora michoacanensis, 127, 



129, 206, 208, 216. 

 mutitorques, Geophis, 66, 68, 207, 211, 

 215. 



Rhabdosoma, 68. 

 myopica, Leptotyphlops, 23. 

 myopicum, Stenostoma, 23. 

 myopicus, Leptotyphlops dulcis, 21, 23, 



Leptotyphlops myopicus, 20, 23, 

 210-212, 214. 

 myriolepis, Lichanura, 26. 

 mystacina, Leptodeira, 86, 88, 207, 2U. 



nasale, Catostoma, 69. 



nasalis, Geophis, 66, 69, 204, 207. 



nasicus, Heterodon, 71. 



Heterodon nasicus, 71, 72, 213. 

 nasus, Conopsis, 46, 205, 206, 208, 209, 



212, 216. 

 nasutus, Bothrops, 179, 182. 



Manolepis, 6, 92. 



Tomodon, 92. 



Trimeresurus, 182. 

 Natricinae, 7, 153. 

 natrix. Coluber, 154. 

 Natrix, 8-10, 16, 153, 164. 



erythrogaster transversa, 154, 205, 

 210, 214. 



rhombifera blanchardi, 154, 155, 

 210, 213-215. 



rhombifera rhombifera, 154, 155; 

 206, 210, 214. 



tessellata, 176. 



valida, 154. 155, 203, 206, 207, 210, 

 213. 



vulgaris, 164. 

 nebulata, Dipsas, 126. 

 nebulatus. Coluber, 126. 



Petalognathus, 126. 



Sibon, 126, 204, 207, 211, 214^216. 

 nelsoni, Exelencophis, 62, 210. 



Lampropeltis triangulum, 79, 83, 

 206, 208-210, 213, 216. 



Tantilla, 62. 

 Nerodia, 55. 



couchii, 164. 



transversa, 55. 

 nevermanni, Conophis, 42. 

 nigrescens, Crotalus molossus, 186, 193, 



205-209, 212, 213, 215, 216. 

 nigricans, Chersodromus, 33. 



Typhlops, 20. 

 nigriceps, Tantilla, 140. 



Tantilla nigriceps, 136, 140, 205. 

 nigrilatus, Adelphicos veraepacis, 30, 31, 

 204. 



