FISHES FROM LAKE TANGANYIKA — MYERS 3 



Identification of the cichlids of the African lakes is rather difficult 

 for one who is not familiar with them and who has little or no 

 comparative material at hand. Not only are many of the species 

 very similar, but the major grouping is based on skeletal modifica- 

 tions that require some skill and practice for their proper use. It 

 is therefore with sincere thanks that I acknowledge the kind help of 

 Dr. Ethelwynn Trewavas, of the British Museum, in the examination 

 of the upper pharyngeal apophysis of a cranium' of Simochromls 

 hahaulti and in the comparison of specimens of T elmatochromis 

 with the types of T. temporal^. 



Family CYPRINIDAE 



ENGRAULICYPRIS MINUTUS Boulcnger 



Five specimens, U.S.N.M. no. 84120, 17 to 35 mm in standard 

 length, from Ujiji, have lost all their scales. Back brownish, sides 

 and opercles brilliant silvery. Anal rays 22 or 23. 



Family BAGRIDAE 



CHRYSICHTHYS MYRIODON Boulenger 



One small specimen, U.S.N.M. no. 84131, 35 mm in standard 

 length, from Ujiji, seems to belong to this species. 



Family CYPRINODONTIDAE 

 Subfamily Lamprichthyinae 



Lamprichthyinae Fowler, 1916, p. 416. — Myers, 1931, p. 11. 



The combination of numerous vertebrae, ctenoid scales, scaled 

 lunate caudal fin, connected pelvic fins, presence of the basisphenoid, 

 closely scaled preorbital, silvery color, and compressed, atherinid- 

 like form trenchantly distinguishes the sole member of this sub- 

 famih'- from all other cyprinodonts. 



LAMPRICHTHYS TANGANICANUS (Boulenger) 



One small specimen, U.S.N.M. no. 84107, of this interesting 

 endemic cyprinodont, from Ujiji, has unfortunately become dried. 

 Besides this, I have examined a fine adult from Mpala, U.S.N.M. no. 

 92962, collected by Cunnington, and two others, Musee Congo Beige 

 no. 2850, kindly loaned by Dr. H. Schouteden. 



Body and head greatly compressed. Axis of body not angulated. 

 Scales ctenoid. Pectoral fins set high, upper limit of their base 

 above middle of depth at this point. Caudal lunate, closely covered 

 with fine scales for half its length. Anal fin very long, rays 27 to 

 30. Dorsal shorter, rays 13 to 16, its origin behind that of anal. 



