316, COtTJBEIDiB. 



The masillarj' develops an inner backward process, wliicli 

 reaches or nearly reaches the ectopterygoid and the posterior 

 portion of the maxillary, the two bones together being loop-shaped 

 in front. The prsefrontal is narrowly separated from the post- 

 frontal. 



Synopsis of the Species. 

 I. Scales in 15 rows. 



A. Nasal in contact with or narrowly separated from the praeocular . 



1. Nasal divided. 



Temporals 2 + 2; ventrals 139-176 ; 



subeaudals 21-35 1. mudleri, p. 316. 



Temporals 1 +2 ; ventrals 170-183 ; 



subeaudals 34^52 2. squamulosus, p. 317. 



2. Nasal entire ; temporals 1-1-2 ; subeaudals 26-38. 



Ventrals 146-156 3. Jcreftii, p. 317. 



Ventrals 167-172 4. fordii, p. 318. 



Ventrals 176-193 5. harrietta, p. 318. 



B. Nasal widely separated from the praeocular ; temporals 2-1-2. 



Third and fourth upper labials entering 



the eye ; ventrals 164-203 6. diadema, p. 319. 



Fourth and fifth upper labials entering 



the eye ; ventrals 143 7. warro, p. 320. 



II. Scales in 17 rows 8. sutherlandi, p. 320. 



1. Pseudelaps muelleri. 



Elaps muelleri, Schleg. Phys. Serp. ii. p. 452, pi. xvi. figs. 16 & 17 



(1837) ; Schleg. ^ Miill. in Temminck, Verh. Nat. Nederl. Ind., 



Zool. p. 66, pi. ix. tigs. 1 & 2 (1844). 

 Pseudelaps muelleri, Burn. ^ Bibr. vii. p. 1233 (1854). 

 Demansia muelleri, Gilnth. Cat. p. 213 (1858). 

 Diemenia muelleri, OiXnth. Ann. ^ Mag. N. R. (4) ix. 1872, p. 34 ; 



Peters 8^ Doria, Ann. Mus. Genova, xiii. 1878, p. 408 ; Boettg. 



in Semon, Zool. Forsch. v. p. 121 (1894) ; Mehely, Term. Fuzet. 



xviii. 1895, p. 185. 



schlegelii, Giinth. I. c. p. 35 ; Peters 8f Doria, I. c. 



Trimeresurus ikaheka, juv., Sauvage, Bull. Soc. Philom. (7) i. 1878, 



p. 44. 



Eye as long as or slightly longer than its distance from the 

 mcuth (larger in the young). Eostral twice as broad as deep, 

 scarcely visible from above ; internasals shorter than the prsefrontals ; 

 frontal once and two thirds to twice as long as broad, longer than 

 its distance from the end of the snout, shorter than the parietals ; 

 nasal divided, in contact with the single praeocular ; two post- 

 oculars ; temporals 2 -)- 2, lower anterior wedged in between the 

 fifth and sixth upper labials ; six upper labials, third and fourth 

 entering the eye ; three or four lower labials in contact with the 

 anterior chin-shields, which are as long as or shorter than the 

 posterior. Scales in 15 rows. Ventrals 139-176; anal divided ; sub- 



