new Fishes from Lake Victoria. 451 



riill-rakrrs slinrt, S or J) on lower j)art of anterior arch. 

 Dorsal XV-X VI 8-10 ; spines incrcasin«; in leii;;tli to the 

 last or last few, V[ to .] lenj^th of head ; iouj^est soft rays ^ to 

 ^, Icnji^th of hca(l. Anal III 8-10; third spine as lon^ as 

 longest dorsal. Pectoral ^ to once leii'^thof head, extending 

 to vertical of origin of anal or a little heyond Ventral 

 extending to origin of anal or heyond. Caudal ronndcd. 

 Caudal peduncle once and j to twice as long as deep. Scales 

 ctenoid, 29-33 ^^'_y, ; lat. 1. c^tt- Adult males black, the anal 

 fin and tlie border of the caudal fin often blight vermilion; 

 orange oi-ellar spots sonictiims present on the anal. Females 

 and young dark grey or brown to blackish, with or w itliout 

 black bars on the body ; usually a black vertical bar below 

 the anterior third of the eye ; a black opercular spot ; dorsal 

 and anal fins dark grey or brown, edged with black; caudal 

 grey or brown, and. like the soft dorsal, with more or less 

 distinct small darker spots ; some yellow spots may be present 

 on the anal ; veutrals greyish or yellow. 



Numerous specimens, measuring from 50 to 1:20 mm., 

 from Entebbe. 



Very closely allied to the preceding ; distinguished by the 

 shape of the caudal fin. 



PLATYTiEMODUS, gCU. DOV. 



Jaws with very broad bands of small conical teeth, the 

 alveolar surface of the prsemaxillaries widening towards the 

 pharynx, the band of teeth in the upper jaw horseshoe- 

 shaped, that in each ramus of the lower jaw not much longer 

 than broad ; a very small part of the maxillary exposed when 

 the mouth is closed. Scales very feebly denticulate. Dorsal 

 with 15 spines, anal with 3. 



Plal>jt(Ouiodus Degeni, sp. n. 



Depth of body twice and f; in total length, length of head 

 3 times. Snout with convex upper profile, as long as inter- 

 orbital width, once and .\ diameter of eye, which is 4 times 

 in length of iieail ; moutli not extending (juite to below ante- 

 rior border of eye, its width half that of the head ; lips 

 thick ; 4 series of scales on the cheek ; gill-rakers short, 

 9 on lower part of anterior arch. Dorsal XV 10; spines 

 increasing in length to the last, which measures ^ length of 

 head ; longest soft rays | length of head. Anal 1119 ; third 

 spine long> .st, not (piite half length of head. Pectoral acutely 

 pointed, as long as head, extending to above origin of anal. 



31* 



