FISHES FROM LAKE TANGANYIKA — MYERS 5 



but they have a long peduncle, the depth entering the length 1.66 

 or more times. Further, they do not have the distinctly vertical 

 lower jaw of the Entebbe and Lukuga fishes, and they are more 

 slender and delicately formed. It is very likely that the Victoria 

 and Tanganyika jmmilus are different forms and that at least two 

 Tanganyika species were included by Boulenger under pumilus, but 

 in the absence of good material and a revision of the many species 

 described recently by Ahl, I can do nothing toward straightening 

 out the matter. If the Victoria and Tanganyika puriiihts are differ- 

 ent, the name pmniJus must go with the latter, since the original de- 

 scription was based on Tanganyika fish, the Degen Victoria examples 

 merely having been mentioned. 



All the pu7Jiilus-like species have practically the same scale and fin 

 counts, and their separation is therefore difficult without careful 

 examination of specimens in very good condition. There is no justi- 

 fication for the continued use, by some authors, of the later, emended 

 generic name Haplochilichthys. 



Family SERRANIDAE 



LATES MICROLEPIS Boulenger 



Two small specimens, U.S.N.M. no. 84132, 36 and 43 mm in stand- 

 ard length, from Ujiji, are referred to this species. They have a 

 wide, very irregular, lateral band from eye to caudal peduncle, and 

 a narrower, less well developed band above this. Otherwise the 

 cheeks and sides are silvery; the membranes of the spinous dorsal 

 and of the pelvics are blackish. There are 18 or 19 developed rakers 

 on the entire first gill arch, and some rudiments at either end. 



Family CICHLIDAE 



TILAPIA NILOTICA (Linnaeus) 



There is a single specimen, U.S.N.M. no. 81130, 47 mm in standard 

 length, from Kigoma. 



LIMNOTILAPIA DARDENNII (Boulenger) 



Six small specimens, the largest 52 mm in standard length, are in 

 the collection; three are from Ujiji (U.S.N.M. no. 84105) and three 

 from Kigoma (U.S.N.M. no. 84104). 



LOBOCHILOTES LABIATUS (Boulenger) 



Two young specimens, U.S.N.M. no. 84119, 45 and 54 mm in stand- 

 ard length, from Ujiji. In appearance they are strikingly unlike the 

 adult figured by Boulenger (1915, p. 280, fig. 191). Superficially, the 



