498 



CICHLICE. 



little longer than eye, which is 4 times in length of head, and almost 

 equals interorbital 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, which measures f- length of head ; longest soft rays §• length 

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



Caudal 



Pectoral f- length of head. 



Ventral not reaching vent. 



Fig. 3 J. 5. 



Perissodus m icrolejiis. 

 Type (Tr. Z. S. 1808). 



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

 65 ^; lateral lines j^p Uniform dark reddish brown; a blackish 

 opercular spot. 



Total length 100 millim. 



Lake Tanganyika. 

 1. Type. Mbifcy Rocks. 



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



37. CHILOTILAPIA. 



Bouleng. Ann. & Mag. N. H. (8) ii. 1908, p. 243. 



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. 



