288 
TEAVELS IN CENTEAL AFEICA. 
nearly as far backwards as tbe nucbal shield. Dorsal spine slightly 
serrated in front and as long as the head; the pectoral spine is 
strongly serrated interiorly, stronger and longer than that of the 
dorsal fin, and extends beyond the root of the ventral. The second 
dorsal fin has a rounded upper margin, commencing before and ter- 
minating behind the anal. Caudal forked. Body immaculate. 
The single specimen of this most interesting new genus of Silu- 
roids is only an inch and a half long ; it was sent by Mr. Pethe- 
rick from Gondokoro. 
Mochocus. 
Body scaleless. Two dorsal fins, both composed of rays ; the 
first with a strong spine ; anal short. Teeth in the upper jaw only, 
in a single series. Mouth of moderate width; barbels, six, thin. 
Eyes of moderate size. Neck covered with soft skin. Gill-openings 
rather narrow. Ventrals six-rayed, inserted immediately behind 
the dorsah 
This genus, which appears to be closely allied to RhinoglaniSj has 
been discovered by M. de Joannis. Unfortunately Valenciennes 
has not taken any notice of it, so that we are obliged to give an 
abstract from the notes published by the collector. 
