316 COLUBRID2. 
The maxillary develops an inner backward process, which 
reaches or nearly reaches the ectopterygoid and the posterior 
portion of the maxillary, the two bones together being loop-shaped 
in front. The prefrontal 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 procular, 
1. Nasal divided. 
Temporals 24+2; ventrals 139-176 ; 
subcaudals 21-35 ........0e0. eens 1. muelleri, p. 316. 
Temporals 142; ventrals 170-183; 
subcaudals 34-52 ...........4 wane 2. squamulosus, p. 317. 
2. Nasal entire; temporals 1+2; subcaudals 26-38. 
Ventrals 146-166 5.0.0 Sook cane 3. krefftii, p. 317. 
Ventrals 167-172 wey. se .scerecceens 4. fordii, p. 318. 
Venttals 270-100 oa isis. sues svcaess 5. harriette, p. 318. 
B. Nasal widely separated from the preocular; temporals 2+ 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) .......0.00 7. warro, p. 320. 
ZL, Scales in 17 rows... wissmesncs vss 8. sutherlandi, p. 320. 
1. Pseudelaps muelleri. 
Elaps muelleri, Schleg. Phys. Serp. ii. p. 452, pl. xvi. figs. 16 & 17 
(1837); Schleg. § Miill. in Temminck, Verh. Nat. Nederl. Ind., 
Zool. p. 66, pl. ix. tigs. 1 & 2 (1844). 
Pseudelaps muelleri, Dum. § Bibr. vii. p. 1283 (1854). 
Demansia muelleri, Giinth. Cat, p. 213 (1858). 
Diemenia muelleri, Giinth. Ann. § Mag. N. H. (4) ix. oe 34; 
Peters §& Doria, Ann. Mus. Genova, xiii. 1878, p. 408; Boettg. 
in Semon, Zool. Forsch. v. p. 121 (1894); Méhely, Term. Fiizet. 
xviii, 1895, p. 135. 
—— schlegelii, Giinth. l. c. p. 35; Peters § Doria, l. ¢. 
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). Rostral twice as broad as deep, 
scarcely visible from above ; internasals shorter than the prefrontals ; 
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 preocular; two post- 
oculars ; temporals 2+2, lower anterior wedged in between the 
fifth and sixth upper labials; six upper Jabials, 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, Scalesin 15 rows. Ventrals 139-176; anal divided ; sub- 
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