562 viPERiB^. 



33. Lachesis wagleri. 



Seba, Thes. ii. pi. Ixviii. fig. 4 (1735). 



Cophias wagleri, Boie, Isis, 1827, p. 561. 



Trigonocephalus wagleri, Schleg. Phys. Serp. ii. p. 542, pi. xix. 



figs. 16-18 (1837;. 

 Trimesurus maculatus, Oray, Zool. Miseell. p. 48 (1842), and Cat. 



p. 8 (1849) ; Motley ^ Billwyn, Nat. Hist. Zabuan, p. 43 (1855). 

 subannulatus. Gray, II. cc. pp. 48 & 9 ; Motley Sf Dillwyn, I. c. 



p. 44,pl. — . 



philippensi.'!, Oray, II. cc. pp. 48 & 10. 



sumatranus {non Maffles), Oray, II. cc. pp. 48 & 10. 



Trigonoceplialus sumatranus. Cantor, Cat. Mai. Mept. p. 121, pi. xl. 



fig. 9 (1847). 

 Trimesurus formosus (non Schleg.'), Gray, Cat. p. 10. 

 Tropidoleemus hombroni, Quicken, in ihimont d' Unrille, Voy. Pole 



Sud, Zool, Pept. p. 23, pi. ii. fig. 2 (1853) ; Burn. $■ Bibr. vii. 



p. 1527 (1854) ; Peters, Mon. Berl. Ac. 1867, p. 29. 

 wagleri, Bum. ^ Bibr. t. c. p. 1524 ; F. Miill. Verh. Nat. Ges. 



Basel, vii. 1883, p. 290. 

 Trigonocephalus bombroni, Jan, Rev. ^ Mag. Zool. 1850, p. 155. 

 Tropidolsemus subannulatus, Peters, Mon. Berl. Ac. 1861, p. 691. 



philippinensis, Peters, I. c. 



Trimeresurus wagleri, OUnth. Rept. Brit. Ind. p. 388(1864); Stoliczka, 



Journ. As. Soc. Beng. xlii. 1873, p. 126 ; Blanf. Proc. Zool. Soc. 



1881, p. 224. 

 subannulatus, var. immaculatus, Peters, Ann. Mus. Geneva, 



iii. 1872, p. 42. 

 Tropidolsemus subannulatus, yar. celebensis, Peters, Mon. Berl. Ac, 



1872, p. 584. 

 Botbrops wagleri, F. Miill. Verh. Nat. Ges. Basel, ya. 1882, p. 156 ; 



V. Lidth de Jetide, Notes Leyd. Mus. viii. 1886, p. 44. 

 Tropidolsemus sp., F.' Miill. Verh. Nat. Ges, Basel, Tiii. 1887, 



p. 281. 



Head very broad, little longer than broad; snout very short and 

 broad, with more or less distinct canthus ; eye very small. Rostral 

 as deep as broad or a little broader than deep ; nasal entire ; upper 

 bead-scales small, strongly imbricate, keeled ; supraocular usually 

 narrow or broken up into scales ; 7 to 13 scales across between the 

 supraoculars ; internasals more or less developed or indistinct ; one, 

 two, or three postoculars and a siibocular ; latter separated from the 

 labials by one or two series of scales, rarely in contact with the third 

 labial ; temporal scales keeled ; 8 to 10 upper labials, second not 

 entering the loreal pit, third very large ; gular scales obtusely 

 keeled. Scales more or less distinctly keeled, in 19 to 27 rows. 

 Ventrals 127-154 ; anal entire ; subcaudals 45-55. Tail prehensile, 

 (irreen, with darker or lighter markings, black and yellow, or nearly 

 entirely black. 



Total length 980 millim.; tail 150. 



Malay Peninsula and Archipelago. 



A. Green above, with white cross-lines edged behind with blue or 

 purple, or with two dorsal series of small spots or cross-bars 

 of the same colour ; a white line on each side of the head, 



