252 COLUBRID. 
3. Miodon gabonensis. 
Elapomorphus gabonensis, A. Dum. Rev. § Mag. Zool. (2) viii. 1856, 
p. 468, and Arch. Mus. x. 1859, p. 206, pl. xvi. fig. 2. 
—— gabonicus, Jan, Arch, Zool. Anat. Phys. ii. 1862, p. 47. 
—— (Urobelus) gabonicus, Jan, Icon. Gén. 15, pl. 1. fig. 1 (1866). 
Microsoma fulvicollis, Mocg. Bull. Soc. Philom. (7) xi. 1887, p. 65. 
Urobelus gabonicus, Bouleng. Proc. Zool. Soc. 1887, p. 127. 
a Sem acanthias, part., Giinth. Ann. § Mag. N. H. (6) i. 
1888, p. 323. 
—— cecutiens, Giinth. 1. c. pl. xix. fig. B. 
Diameter of eye one third to one half its distance from the oral 
margin. Rostral broader than deep, just visible from above ; inter- 
nasals as long as or slightly shorter than the prefrontals ; frontal 
slightly broader than the supraocular, once and one third to once 
and a half as long as broad, as long as its distance from the rostral, 
much shorter than the parietals; one preocular, in contact with 
the nasal, which is entire or imperfectly divided ; one or two post- 
oculars; temporals 1+1; seven upper labials, third and fourth 
entering the eye; first lower labial forming a suture with its fellow 
behind the symphysial; four lower labials in contact with the 
anterior chin-shields, which are longer than the posterior. Scales 
in 15 rows. Ventrals 214-249; anal divided; subcaudals 16-24. 
Dark brown or olive above, with three more or less distinct darker 
longitudinal lines, or almost uniform blackish; a pale brownish 
band across the occiput ; upper lip, ventrals, subcaudals; and terminal 
caudal scute white. 
Total length 510 millim. ; tail 23. 
West Africa, from the Old Calabar to the Congo. 
a, 9 (V.214; 0.17). Old Calabar. D.G- Rutherford, Esq 
[O.}. 
b-c. 2 eg 231,230; C. Cameroon Mts., 2000ft. Sir H. H. Johnston 
16, 18). / [P.]. (Types of £, 
cecutiens. ) 
d. 2 (V. 215; C.17). Rio del Rey. an) H. Johnston 
4, Miodon notatus*. 
Microsoma notatum, Peters, Sitzb. Ges, Naturf. Fr, 1882, p. 127 ; 
Mocq. Bull. Soc. Philom. (7) xi. 1887, p. 64. 
Diameter of eye about half its distance from the oral margin. 
Internasals as long as or slightly shorter than the preefrontals ; 
frontal a little longer than broad, much shorter than the parietals ; 
nasal divided, in contact with the single preocular; one or two 
postoculars ; temporals 1+ 1; seven upper labials, second in contact 
with the procular, third and fourth entering the eye; first lower 
* I am indebted to Prof. Boettger for notes on a specimen from Cameroon, 
preserved in the Liibeck Museum. 
oy Pp 
