450 cichlid^. 



subequal from the eighth, which measures ^ length of head; longest 

 soft rays ^ to -| length of head. Anal III 13 ; third spine \ length of 

 head. Pectoral a little shorter than head, extending to vertical of origin 

 of anal. Inner rays of ventral produced, extending beyond origin of 

 anal. Caudal with, deep crescentic notch. Caudal peduncle twice as 

 long as deep. Scales finely denticulate, 38-40 g^ ; lateral lines j^g. 

 Brownish above, yellowish beneath, throat and breast white ; lips and 

 chin bright yellow ; two series of elongate brown spots on the sides of 

 the body ; a blackish opercular spot ; a blackish spot at base of caudal ; 

 dorsal white with bright yellow spots and a purplish streak within the 

 upper border ; anal with a purplish streak between two bright yellow 

 ones ; ventral and caudal with bright yellow spots, the latter with two 

 purplish crescentic bands. 



Total length 95 millim. 



Lake Tanganyika. — Type in Congo Museum, Tervueren. 

 1. One o£ the types. Kilewa Bay. Dr. L. Stappers (C). 



Ectodus albini, Steind. Anz. Ak. Wien, 1909, p. 427, from L. Tan- 

 ganyika, probably belongs to Enantiojnts, differing from E. ochrogenys 

 chiefly in the number of dorsal spines. D. X1I-XIII 13-15. 

 A. Ill 12-14. Sc. 37-38. Lat. 1. f^. 



22. STAPPERSIA. 



Boulcng. Rev. Zool. Afr. iii. 1914, p. 445. 



Body elongate ; scales ctenoid ; two incomplete lateral lines. Mouth 

 small, horizontal, very protractile ; teeth very small, conical, in 4 or 

 5 series. Maxillary exposed at the end. A large papillose pad on each 

 side of the pharynx, forming a strong protuberance in front of the upper 

 part of the branchial arches. Dorsal with 13 to 15 spines, anal with 3. 

 Inner rays of ventrals the longest. 



Lake Tanganyika. 



1. STAPPERSIA SINGULARIS. 

 Bouleng. 1. c. 



Depth of body 4^ to 4-| times in total length, length of head 3 times. 

 Head twice as long as broad ; snout with strongly carved upper profile, 

 a little longer than eye, which is oval, 3 times in length of head, and 

 much exceeds interorbital width ; mouth extending to between nostril 



