60. COLTTBEH. 57 



iiyosoma virido, WayL Icon. Amph. pi. ix. (1828). 

 HtTi^todryas oxvcephalus, .SV7</Vy. Phys. Serp. ii. p. 189, pi. vii. 

 - \ 'J (1837), and Abbild. pi. x'liv. figs. 1-9 (1844) ; Cantor, 



< -at. Mnl. Kept. p. 80 (1847). 

 Alopecophis chalybeus, Gray, Ann. fy May. N. H. (2) iv. 1849, 



p. 247. 

 Gonyosoma oxycephalum, Dum. $ Bibr. vii. p. 213 (1854); Giinth. 



Cat. p. 122 (1858), and Kept. Brit. Ind. p. 294 (1864) ; Jan, Icon. 



Gbt.31, pi. i. (1869) ; Stoliczka, Journ. As. Sue. Beny. xxxix. 1870, 



p. 193, & xlii. 1873, p. 123 ; Theob. Cat. Kept. Brit. Ind. p. 189 



(1876). 



Body rather compressed. Snout subacuminate, elongate, obliquely 

 truncate and projecting ; rostral nearly as deep as broad, visible 

 from above ; internasala one half to two thirds as long as the prae- 

 frontals, which are more than half as long as the parietals ; frontal 

 as long as broad, or a little longer, as long as its distance from the 

 rostral or the end of the snout, a little shorter than the parietals ; 

 loreal very elongate ; one large praeocular, in contact with the 

 frontal; two postoculars; temporals 2+3; nine to eleven upper 

 labials, two (rarely three) of which (fifth and sixth or sixth and 

 seventh) enter the eye ; six lower labials in contact with the ante- 

 rior chin-shields, which are much longer than the posterior. Scales 

 in 23 to 27 rows, smooth or faintly keeled. Ventrals with a lateral 

 keel, 233 to 263; anal divided; subcaudals 122-149. Bright 

 green above, the scales usually finely edged with black ; yellowish 

 or pale green below ; a blackish streak along each side of the head, 

 passing through the eye ; tail usually yellowish brown. 



Total length 2300 millim. ; tail 480. 



Eastern Himalayas, Malay Peninsula and Archipelago. 



a. 2 (Sc. 25; V. 258; Tenasserim. Prof. Oldham [P.I 

 C. 123). 



b. Ilgr. (Sc. 27 ; V. 248 ; Pinang. Dr. Cantor. 

 C. 142). 



c. d. $ (Sc. 25, 23; V. Singapore. Gen. Hardwicke [P.]. 

 262, 238; C. 136,139). 



e. 3 (Sc. 25 ; V. 233 ; C. Borneo. Sir J. Brooke [P.]. 



133). 

 /. rf (Sc. 25 ; V. 241 ; C. Borneo. L. L. Dillwyn, Esq. 



136). [P-]- 



g, h. $ (Sc. 27; V. 251 ; Philippines. IL Cuming, Esq. [C.]. 



C. 122) &vg. (Sc. 25; 



V. 245 ; C."122). 

 i-k, 1. rf (Sc. 25 ; V. 240 ; Java. 



C. 143), hgr. (Sc. 26; 



V. 240; C. 139), & yg. 



(Sc.25;V.239;C. 128). 

 IN. Yg. (Sc. 26; V. 230; [Mauritius.] Zoological Society. 



C. 136). (Typo of Alopecophis chalybeus.) 



31. Coluber janseni. (PLATE I. fig. 2.) 



Gonyosoma jansenii, Bleek. Nat. Tijdschr. Nederl. Ind. xvL 1868, 

 p. 24 J. 



