844 COLUBRID. 
Hormonotus modestus, Giinth. Ann. §& Mag. N. H. (3) ix. 1862, p. 53 ; 
Bouleng. Ann. §& Mag. N. H. (6) viii. 1891, p. 345. 
Heterolepis glaber, Jan, Elenco, p. 98 (1863), and Icon. Gén. 36, 
pl. vi. fig. 4 (1870); F. Mill. Verh. nat, Ges. Basel, yii. 1885, 
p. 686; Mocquard, Bull. Soc. Philom. (7) xi. 1887, p. 18. 
Boodon (Lamprophis) modestus, Peters, Mon. Berl. Ac. 1875, 
200 
_> “(Alopecion) vossii, Fischer, Jahrb, Hamb. Wiss. Anst. vy. 1888, 
p. 3, pl. i. fig. 1. : 
Rostral twice as broad as deep, scarcely visible from above; in- 
ternasals as long as broad, shorter than the prefrontals ; frontal 
twice as long as broad, as long as or a little longer than its distance 
from the end of the snout, as long as the parietals; loreal twice as 
long as deep; one pre- and two or three postoculars; temporals 
243; eight upper labials, third, fourth, and fifth, or fourth and 
fifth, entering the eye; four or five lower labials in contact with 
the anterior chin-shields, which are longer than the posterior. 
Scales in 15 rows, those of the middle row hexagonal and nearly as 
broad as long. Ventrals 221-244; anal entire; subcaudals 81-99. 
Uniform pale brown or fulvous above, white beneath; some or all 
of the upper labials with a dark brown spot. 
Total length 730 millim. ; tail 150. 
West Africa, from the Gold Coast to the Gaboon. 
A. Two labials entering the eye; two postoculars. 
a. 2 (V. 282; 0.94).  W. Africa. J. C. Salmon, Esq. [P.]. 
B. Three labials entering the eye ; three postoculars, 
b. bo (V. 236; C. 97). Fernando Po. Dr. A. Giinther [P.}. 
c. oO (V. 244; C. 97). » Cameroons, Dr. J.G. Fischer. (Type 
of Boodon vossit.) 
d. 2 (V. 281; C. 85). W. Africa. 
47. SIMOCEPHALUS. 
Heterolepis (non Nees), Smith, Ill. Zool. S. Afr., Rept. (1847) ; Dum. 
& Bibr. Erp. Gén. vii. p. 419 (1854); Giinth. Ann. § Mag. N. H. 
(3) xii. 1863, p. 359. 
Simocephalus, Giinth, Cat. Col. Sn. p. 194 (1858). 
ey Segre part., Giinth. Ann. §& Mag. N. H. (3) xii. 1868, 
. 359. 
Haerolete. art., Jan, Elenco sist. Ofid. p. 94 (1863) ; Mocquard, 
Bull. Soc. Philom. (7) xi. 1887, p. 8. 
Maxillary and dentary bones angularly bent inwards anteriorly ; 
the 8 or 9 anterior maxillary teeth increasing in size and followed 
after an interval by 15 to 28 very small teeth; anterior mandi- 
bular teeth increasing in size, the eighth or ninth largest. Head 
very distinct from neck, much depressed ; eye moderate or small, 
with vertically elliptic pupil; nostril very large. Body cylindrical ; 
scales keeled, without pits, in 15 or 17 rows, those of the middle 
. 
