ioQ CICHLID^. 



Depth of body 3 to 3^ times in total length, length of head 2f to 3 

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

 curved upper profile, shorter than eye, which is 2i 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 f 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 ]| times as long 



Ficr. 310. 



Treinatocara marylnatuni. 

 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. S tappers {().), 



2. TREMATOCARA NIGRIFRONS. 

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



Depth of body 3J 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 ; clieek 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 iicad. Anal 111 10 ; tliird spine as long as 



