OF FISHES FEOM LAKES TANGANYIKA AND KIVU. 151 



short, 10 or 11 on lower part of anterior arch. Dorsal XV-XVII 9-10 ; spines 

 increasing in length to the last, which is a little less than half length of bead ; the 

 longest soft rays produced into filaments, and only a little shorter than head. Pectoral 

 pointed, as long as head. Ventral produced in a filament, and extending to vent or 

 beyond. Anal III 8 ; third spine stronger and shorter than the last dorsal spine. 

 Caudal feebly emarginate. Caudal peduncle 1^ times as long as deep. Scales with 



3—4 2^-25 



finely denticulate border, o5-36 g^j^ ; lat. 1. jiiTs- Brownish, with or without oblique 

 cross-bars of mother-of-pearl or silvery white, sometimes with ill-defined dark bars 

 across the back ; a very distinct, blue-black, opercular spot ; dorsal and anal grey or 

 blackish, often striated or spotted with white ; the membrane between the dorsal 

 spines edged with black ; anal sometimes blackish. 



Total length 130 millim. 



Numerous specimens from Msambu. 



23. Paeatilapia bloteti Sauvage. 



Lake Kivu. I have compared the specimens brought home by Mr. Moore with one 

 of the type specimens from Kandoa, Usagara, German East Africa. 



24. Paeatilapia calliuba. (Plate XIX. fig. 3.) 

 Bouleng. Ann. & Mag. N. H. (7) vii. 1901, p. 3. 



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

 pointed, with straight upper profile, as long as or a little shorter than the eye, the 

 diameter of which is double the interocular width and is contained 3 to 3J times in 

 length of head ; lower jaw projecting beyond the upper ; maxillary extending to 

 below anterior fourth of eye ; teeth small, in two rows ; 2 or 3 series of scales on the 

 cheek ; large scales on the opercle. Gill-rakers moderately long, 15 on lower part of 

 anterior arch. Dorsal XVI-XVII 10 ; spines increasing in length to the last, which 

 measures | or -^ length of head ; longest soft rays f or f length of head. Pectoral 

 pointed, a little shorter than head. Ventral reaching vent. Anal III 7-8 ; third 

 spine longest, a little shorter than last dorsal spine. Caudal feebly emarginate. 

 Caudal peduncle 1§ times as long as deep. Scales with finely denticulate border, 

 37_40 g^ ; lat. 1. iQiyj. Pale brownish above, silvery beneath ; a blackish opercular 

 spot ; dorsal and anal edged with black ; 4 or 5 black bars across the caudal ; young 

 with black bars across the dorsal. 



Total length 110 millim. 



Several specimens from Kalambo. 



25. Paeatilapia stenosoma. (Plate XVII. fig. 1.) 

 Bouleng. Ann. & Mag. N. H, (7) vii. 1901, p. 2. 



Body very strongly compressed, its depth equal to the length of the head and 



