THE TANGANYIKA PROBLEM. 1S1 



yellowish stripes along each side ; pectorals yellowish ; other fins dark grey or 

 blackish. 



Total length, ioo millim. 



Described from three specimens. Native name, " Likuko." 



This species is named in memory of the distinguished young geologist, Dr. De 

 Windt, attached to Lieut. Lemaire's expedition, who was accidentally drowned in 



Lamprologus modestus. See p. 170. 



Lake Tanganyika. It is very closely allied to P. ventralis, Blgr., from which it 

 differs in the dentition and in the shorter pectoral fin. 



46. Paratilapia furcifer, sp. n. — Blgr. 1898. (Fig., p. 177.) 



Teeth very small, in three series in both jaws, the outer largest and tipped with 

 brown. Depth of body equal to length of head, 3 times in total length. Snout 

 with curved upper profile, a little shorter than the eye, the diameter of which is 2§ 



1 



Haplochilus tanganicanus. See p. 168. 



to 2| times in length of head and slightly exceeds interorbital width ; maxillary 

 extending to below anterior border of eye ; two or three series of scales on the 

 cheek ; large scales on the opercle. Gill-rakers rather long, lanceolate, 15 or 16 on 

 lower part of anterior arch. Dorsal XIII., 13-14; spines increasing in length to 

 the ninth, which measures a little less than h length of head ; some of the soft rays 

 produced, nearly as long as head. Pectoral a little longer than head. Ventral 



