498 



CICHLTD.E. 



little longer tlinn eye, Avhicli is 4 times in length of liead, and almost 

 equals interoibital width; lower jaw projecting; mouth extending to 

 below anterior border of eye; 20 teeth in upper jaw, 18 in lower; 

 3 series of scales on the cheek. Gill-rakers rather long, 14 on lower 

 part of anterior arch. Dorsal XVIII 10 ; spines increasing in length to 

 the last, whicii measures f length of head ; longest soft rays f length 

 of head. Anal III 8; third spine nearly as long as longest dorsal. 

 Pectoral I length of head. Ventral not reaching vent. Caudal 



ri<?. 345. 



Perissodas ni icroleins. 

 Type (Tr. Z. S. 1898). 



truncate. Caudal peduncle nearly 1^ times as long as deep. Scales 



Uniform dark reddish brown ; a blackish 



44 



ao-yr 



65 ^•, lateral lines - 

 opercular spot. 



Total length 100 millim. 



Lake Tanganyika, 

 1. Type. :Ml)ity Rocks 



Prof. J. R. S. Moore (C). 



37. CHILOTILAPIA. 



Bouleng. Ann. & Mag. N. H. (8) ii. 190j<. p. 21:5. 



Body moderately elongate ; scales ctenoid ; two incomplete lateral 

 lines. Teeth in several rows, not compressed, with obtuse or rounded 

 crowns; maxillary exposed. A large papillose pad on each side of the 

 pharynx, forming a strong protuberance in front of the upper part of 

 the branchial arches. Dorsal with 15 spines, anal with 3. 



Lake Nyassa. 



