Dr. A. Giinther on a new Species of Apocryptes. 117 
height of the body is two-sevenths of the total length (without 
caudal), the length of the head one-fourth. Uniform brown. 
River Ogome (Gaboon). 4 inches long. 
Mormyrops longiceps, sp. n. 
D. 26. A. 39. L. lat. 90. 
Head very low and elongate, more than twice as long as high. 
Snout subcylindrical, of moderate length, rounded in front, 
with the upper jaw somewhat longer than the lower. ye very 
small, situated in the anterior third of the head. Teeth not very 
small, truncated and notched at the apex, %. Dorsal fin more 
than half as long as the anal. The height of the body is one- 
seventh of the total length (without caudal), the length of the 
head a little less than one-fourth. Coloration uniform. 
This species is more closely allied to 1. anguilloides from the 
Nile than to WM. deliciosus from West Africa; it differs from the 
former in the shape of its head. It was discovered by H. T. 
Ussher, Esq., in the Bossumprah River. One _ specimen, 
1] inches long, is in the Liverpool Museum. 
XVI.—Description of a new Species of Apocryptes. 
By Dr. Atsert GUNTHER. f 
Apocryptes polyophthalmus. 
D. 5-6 | 3. A. 25. 
Scales minute anteriorly, becoming somewhat larger poste- 
riorly. The height of the body is one-sixth or one-seventh of 
the total length (without caudal). Snout rather high, twice as 
long as the eye, with the upper jaw somewhat longer than the 
lower ; gape extending to below the posterior margin of the eye. 
Hye retractile as in Periophthalmus. Teeth small, two anterior 
pairs enlarged in each jaw; mandibulary teeth nearly horizontal. 
Dorsal fins not continuous, the spines of the anterior prolonged 
into filaments. Caudal fin shorter than the head. Olive- 
coloured ; head with some minute whitish dots. Anterior dorsal 
with numerous small (in spirits white) ocelli. Similar ocelli on 
the second dorsal, where they are elongate and arranged in four 
regular series ; a few ocelli on the caudal fin. 
China. 5 inches long. 
