324 COLUBRID. 
8. Gonionotophis grantii. (Pxiare XXIII. fig. 1.) . 
Simocephalus grantii, Giinth, Ann. § Mag. N. H, (8) xii. 1868, 
p. 861. 
Gonionotus grantii, Bouleng. Ann. §& Mag. N. H. (6) viii. 1891, 
p. 345, 
Rostral nearly twice as broad as deep, scarcely visible from 
above; internasals very short; frontal as broad as long, not quite 
as long as its distance from the end of the snout, much shorter than 
the parietals ; supraocular very small ; loreal twice as long as deep; 
one pre- and one or two postoculars; temporals 1+2; seven upper 
labials, third and fourth entering the eye, fifth sometimes in contact 
with the parietal ; five lower labials in contact with the anterior 
chin-shields, which are longer than the posterior. Scales rather 
feebly keeled, lower row smooth, in 15 rows (19 on the neck). 
Ventrals 167 ; anal entire; subcaudals 67. Blackish brown above, 
the scales edged with lighter, yellowish beneath. 
Total length 410 millim.; tail 90. 
West Africa. 
a-b. 3 (V. 167, 167; C. 67, ?). W. Africa. Prof, Grant [P.}. 
(Types.) 
‘41. BOTHROPHTHALMUS. 
Bothrophthalmus, Peters, Mon. Berl. Ac. 1863, p. 287 ; Jan, Elenco 
sist. Ofid. p. 57 (1863). 
Maxillary teeth 23, anterior longest ; anterior mandibular teeth 
longest. Head distinct from neck ; eye moderate, with round pupil ; 
loreal region with a deep concavity. Body cylindrical, elongate ; 
scales strongly keeled, without pits, in 23 rows; ventrals rounded. 
Tail moderate ; subcaudals in two rows. Hypapophyses developed 
throughout the vertebral column. 
Tropical Africa. 
1. Bothrophthalmus lineatus. 
Elaphis (Bothrophthalmus) lineatus, Peters, Mon. Berl. Ac. 1863, 
287 
Bothrophthalivas brunneus, Giinth. Ann. §& Mag. N. H. (8) xii. 
1863, p. 356, pl. vi. fig. E; F. Mill. Verh. nat. Ges. Basel, vii. 
1885, p. 680. 
melanozostus, Jan, Elenco, p. 62 (1863), and Icon. Gén. 20, 
pl. v. (1867). 
lineatus, var. infuscatus, Buchh. § Peters, Mon. Berl., Ac. 
1875, p. 198. 
—— modestus, Fischer, Abh. naturw. Ver. Hamb. ix. 1886, p. 13. 
—— lineatus, Boettg. Ber. Senck. Ges. 1887-88, p. 50. 
Rostral broader than deep, just visible from above; internasals 
much shorter than the prefrontals; frontal once and a half to once 
and two thirds as long as broad, at least twice as broad as the 
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