OF FISHES FROM LAKES TANGANYIKA AND KIVU. 149 



16. Stnodontis granulosus. (Plate XVI.) 

 Bouleng. Ann. & Mag. N. H. (7) vi. 1900, p. 480. 



Body feebly compressed, its depth equal to the length of the head and contained 3 

 to 3^ times in the total length. Head not or but slightly longer than broad, feebly 

 depressed, covered with granular asperities; frontal fontanelle rather narrow; snout 

 rounded, a little more than half the length of the head ; eye directed upwards, its 

 diameter 5^ to 6 times in the length of the head, 2^ to 2§ times in the width of the 

 interocular region, which is slightly convex ; no occipital keel. Lips moderately 

 developed; maxillary barbel simple, as iong as or a little longer than the head, and not 

 extending beyond the anterior third of the pectoral spine ; mandibular barbels inserted 

 on a straight transverse line, the outer f or § the length of the head and thrice that of 

 the inner, both with very short branches, especially near the base, where they are 

 tubercular. Prsemaxillary teeth small and numerous, forming a broad band ; anterior 

 mandibular teeth small, feebly curved, hardly ^ the diameter of the eye, and numbering 

 40 to 42. Gill-cleft not extending inferiorly beyond the base of the pectoral fin. 

 Occipito-nuchal shield rugose, tectiform, a little longer than broad, ending in two 

 rounded points which extend to the level of the base of the first soft dorsal ray. 

 Humeral process covered with granular asperities, keeled, narrow, and sharply pointed, 

 extending nearly as far back as the occipito-nuchal shield. The skin of the whole body, 

 including the adipose fin, covered with small, closely-set, granular papillse. Dorsal I 7 ; 

 spine rather strong, 1^ times as long as the base of the fin, striated and armed behind 

 with 10 to 15 retrorse serrse. Adipose dorsal 4 times as long as deep, 2^ to 3^ times 

 as long as its distance from the rayed dorsal. Anal III 8. Pectoral spine very strong, 

 as long as that of the dorsal, striated, feebly denticulate on the anterior border, with 

 15 to 17 strong retrorse serree on the posterior border. Ventral not reaching anal. 

 Caudal deeply notched. Olive above, yellowish beneath ; dorsal, anal, and paired fins 

 black in front, orange behind ; caudal black, with a broad orange posterior margin. 



Total length 230 millim. 



Three specimens from the north end of Lake Tanganyika, in rather deep water. 



16. Stnodontis multipunctatus Blgr. 

 Kalambo. 



17. Malopterurus electricus Lacep. 

 Kalambo. 



Serranid^. 

 1 b. Lates microlepis Blgr. 



Kinyamkolo, and middle of lake, in deep water. 

 Mr. Moore has satisfied himself that the ferocious fish, over four feet long, attacking 



