456 CICHLID^E. 



Depth of body 3 to 3£ times in total length, length of head 2| to 3 

 times. Head twice as long as broad ; snout as long as broad, with 

 curved upper profile, shorter than eye, which is 2^ times in length of 

 head and exceeds interorbital width ; mouth extending to below anterior 

 border of eye; cheek naked. Gill-rakers short, 10 to 16 on lower part 

 of anterior arch. Dorsal IX-X 11; spines § length of head, a little 

 shorter than longest soft rays. Anal III 10; third spine nearly as long 

 as dorsals. Pectoral as long as head. Ventral reaching origin of anal. 

 Caudal with deep crescentic notch. Caudal peduncle H times as long 



Fi£. 310. 



Trematocara marginatum.. 

 Type (Tr. Z. S. 1899). 



as deep. Scales 28-30 |; lateral line reduced to a few (6 or 7) short 

 tubes behind the head. Pale brownish above, white beneath ; a bluish 

 lateral stripe ; fins yellowish, dorsal and anal edged with blackish. 



Total length 63 millim. 



Lake Tanganyika. — Type in Congo Museum, Tervueren. 



1. Type. Moliro. Capt. Lemaire (C). 



2. Ad. Albertville. Capt. Hecq (C). 



3. Ad. Usambura Market. Prof. J. E. S. Moore (C). 



4. Ad. Kilewa Bay. Dr. L. Stappers (0.). 



2. TREMATOCARA NIGRIFRONS. 

 Bouleng. Tr. Zool. Soc. xvii. 1906, p. 570, pi. xli. fig. 1. 



Depth of body 3| times in total length, length of head 3 times. Head 

 twice as long as broad ; snout as long as broad, with curved upper 

 profile, a little shorter than eye, which is 2| times in length of head 

 and a little exceeds interorbital width ; mouth extending to below 

 anterior fourth of eye ; cheek naked. Gill-rakers long and slender, 

 closely set, 20 or 21 on lower part of anterior arch. Dorsal X 11-12 ; 

 spines increasing in length to the. last, which measures f length of head ; 

 longest soft rays \ length of head. Anal III 10 ; third spine as long as 



