197, MIoDoN. © 251 
broad, as long as its distance from the end of the snout, shorter 
than the parietals ; nasal divided; one preocular, in contact with 
the posterior nasal; one or two postoculars; 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 190- 
216; anal entire; subcaudals 16-21. Whitish or pale reddish 
above, with five black stripes, the median broadest and occupying 
one and two half scales, the outer running between the second and 
third rows of scales; top of head black; a whitish occipital bar 
edged with black behind ; end of snout, upper lip, tip of tail, and 
lower parts white. 
Total length 550 millim. ; tail 30. 
Guinea; Congo? 
a. Hgr. (V.190; C. 21). Ashantee. Mr. McCarthy [C.]. 
b. 2 (V. 210; C. 17). , W. Africa. J. i Salmon, Esq. 
¢. Skull of 8. a 
2. Miodon collaris. , 
Polemon barthii (non Jan), Giinth. Ann. § Mag. N. H. (3) xv. 1865, 
90, 
hie collare, Peters, Sitzb, Ges. Naturf. Fr. 1881, p. 148; 
Bocage, Jorn. Se. Lash. xi. 1887, p. 182, and Herp. Angola, p. 124, 
pl. xiv. figs. 1 & 2 (1895). 
Elapomorphus acanthias, part., Giinth. Ann. § Mag. N. H. (6) i. 
1888, p. 323. 
Diameter of eye about three fifths its distance from the oral 
margin. Rostral broader than deep, just visible from above ; inter- 
nasals considerably shorter than the prefrontals ; frontal slightly 
broader than the supraocular, once and a half as long as broad, as 
long as its distance from the rostral, much shorter than the parietals ; 
nasal divided, in contact with the preocular; two (rarely one*) 
postoculars; temporals 1+1 (or 1+2); seven upper labials, third 
and fourth entering the eye; first lower labial forming a suture 
with its fellow behind the symphysial; four or five lower labials 
in contact with the anterior chin-shields, which are longer than 
the posterior. Scales in 15 rows. Ventrals 201-228; anal 
divided ; subcaudals 16-22. Blackish above and on the sides down 
to the outer end of the ventrals and subcaudals, or dark grey with 
the scales edged with black ; head and nape pale brown, with some 
black blotches on the crown and below the eye; lower parts and 
terminal caudal shield white. 
Total length 550 millim.; tail 32. 
West Africa (Old Calabar, Congo, Angola). 
a. 2 (V. 204; 0.18). Old Calabar. 
* The specimen in the Collection has a single postocular on one side. 
