OPHIDIA. 367 



Dromicordryas Blgr., Mad. ; Elapoides Boie, Malay Arch. ; Glypholycus 

 Gthr., C. Afr. ; Gonionotophis Blgr., Congo ; Haldea B. and G., N. 

 Am. ; Haplocercua Gthr., Ceylon ; Helicops, Wagl., C. and S. Amer., 

 S.-E. As., trop. Afr. ; Hormonotus Hallow, W. Afr. ; Hydraethiops 

 Gthr., trop. Afr. ; Hydrablabes Blgr., Borneo ; Ischognathus D. and 

 B., N. and C. Am. ; Lamprophis Smith, S. Afr. ; Lioheterodon D. 

 and B., Mad. ; Liophidium Blgr., Madagascar; Lycognathophia Blgr., 

 Seychelles ; Lycophidium D. and B., trop. and S. Afr, ; Macropisthodon 

 Blgr., E. Indies ; Micropisthodon Mocq., Mad. ; Opisthotropis Gthr., 

 W. Afr., S. Cliina, Malay Arch. ; Oxyrhabdium Blgr., PhiHppines ; 

 Plagiopholis Blgr., movmtains of Burma ; Polyodontophis Blgr., 

 Ittad., Comoros, S.-E. As., C. Am. ; Prymnomiodon Cope, Siam ; 

 Pseudoxenodon Blgi-., E. Indies, S. Cliina ; Pseudoxyrhopus Gthr., 

 Mad. ; Rhabdops Blgr., India, S. China ; Simocephalvs Gthr., trop. 

 and S. Afr. ; Streptophorus D. and B., C. Am., N.-W. S. Am. 

 Tetralepis Boet., Java ; Trachischium Gthr., E. Himalayas, Khasi 

 Hills; Tretanorhinus D. and B., C. Am., Cuba; Trirhinopholis Blgr., 

 Burma; Tropidonotus Kuhl, Eur., As., Af., N. Aust., N. and C. 

 Am., 74 species ; T. natrix, grass-snake, of this coxmtry, is widely 

 distributed, but absent from Scotland and Ireland, can climb trees 

 and swim, oviparous ; pair in May, June ; lay in July, August in 

 rich vegetable soil ; to 6 ft., average 3 ft. ; Xenochrophis Gthr., S.E. 

 As. ; Xylophis Beddome, S. India. 



II. Genera in which the hypapophyses are absent on the posterior 

 dorsal vertebrae, arranged alphabetically. 



Abastor Gr., N. Am. ; Ablabes D. and B., S.-E. Asia, Japan ; 

 Aporophis Cope, S. Amer. ; Arrhyton Gthr., Cuba ; Atractus Wagl., 

 C. and S. Am., about 25 species • Calamaria Boie, from Assam, 

 Burmah and S. China to Malay Arch., about 35 species ; Carphophia 

 Gerv., N. Am. ; Cetnophora Cope, N. Am. ; Chilomeniacus Cope, 

 Lower CaUfomia; Chlorophis Hallow, trop. and S. Afr. ; Coluber L., 

 Eur., As., N. and trop. Amer., about 50 species. C. quatv/trlineatua 

 Lacep. to 6 ft., Italy, S.E. Eiu-., S. Tyrol ; C. leopardinus Bp., S. 

 Italy, S.E. Eur., As. Min. ; C. lorifjissimus Laxir., aesculap Snake, S. 

 France, Italy, S.E. Eur. ; Contia B. and G., S.-W. Asia and Sind, 

 Am., about 20 species; Coronella Laur., Eur., S.-W. As., India, N. 

 Amer., about 20 species ; C. laevis Lac. (austriaca), the smooth 

 snake, found in England, superficially resembles the viper but with 

 round pupils, to 2 ft. ; Cyclagras Cope, S. Am. ; Dendrelaphis Blgr., 

 India, Ceylon, Burma, Malay Pen. and Arch. ; Dendrophia Wagl., 

 S.-E. As., Aust., tree-snakes; Dimadea Gr., S.Am. ; Dinodon T>. and 

 B., China, Japan ; Diroaema Blgr., C. Am. ; Drepanodon Per., S. 

 Am. ; Dromicua Bibr., W. Indies, Chili, Peru ; Drymobiua Cope, 

 Am., Texas to Peru ; Dryocalarmia Gthr., S.-E. As. ; Farancia Gr., 

 N. Am. ; Ficimia Gr., Arizona, Texas, Mexico ; Gaatropyxia Cope, 

 W. Afr. ; Geagraa Cope, Mexico ; Geophia Wagl., C. and S. Am. ; 

 Gonyophia Blgr., Malay Pen., Borneo ; Grayia Gthr., trop. Afr. ; 

 Hapsidophrya Fisch., W. Afr. ; Herpetodryaa Wagl. ; Heterodon Latr., 

 N. Am. ; Honialosotna Wagl., Afr. ; Hydromorphua Ptrs., C. Am. ; 

 Hydropa Wagl., S. Am. ; Bypaiglena Cope, S. N.-Am., C. Am., 

 Venezuela ; Hypsirhynchus Gthr., S. Domingo ; Idiopholia Mocq., 

 Borneo ; Leptocalamua Gthr., trop. Amer. ; Leptophia Bell, C. and S. 

 Am., tree snakes ; Liophia Wagl., Am., W. Indies, about 20 species ; 



