than one-half of the length of the snout and contained 423 times in that of the head; its diameter does not equal the width of the interorbital space in the largest specimen. Præorbital as wide as the eye. Præeoperculum with a broad scaleless inferior limb, but its width is much narrower than the cheek, on which the scales are arranged in four series. The clorsal fin commences above the root of the pectoral fin; its spines are of moderate strength, the middle ones being much longer than the eye. Caudal fin slightly emarginate.
Specimens from Azuminé Creek have sixteen dorsal spines and the pectoral fin reaches nearly the vent. Two faint broad longitudinal bands on the upper half of the body are crossed by five or six transverse bands, equally faint, the parts crossed being of a darker tint. These markings are more distinct in young examples than in the adult. An opercular spot.
Specimens from Kondo-Kondo have fifteen dorsal spines and a rather shorter pectoral. None of the markings are present beside the opercular spot.
| millim. | |
| Total length | 148 |
| Total„ length„ without caudal | 125 |
| Length of the head | 45 |
| Diameter of the eye | 10 |
| Length of the ninth dorsal spine | 15 |
The specimen described by Sauvage was considerably larger than ours; to this circumstance I am inclined to ascribe the discrepancies between the two descriptions.
Cynoglossus senegalensis, Kaup.
Lambarene.
Clarias Walkeri, sp. n.
D. 77.A. 56.P. 1/8.
Vomerine teeth villiform, forming a rather narrow band, without posterior projection, and as broad as the intermaxillary band; each half of the latter is twice as wide as broad, and both the intermaxillary and vomerine bands have the same lateral extent. Head covered above with smooth thin skin, scarcely any granulation being visible. The occipital process projects as an isosceles triangle, the hind margin of the head forming an open crescent on each side of the process. The
