82 
THE TANGANYIKA PROBLEM. 
much produced, extending nearly to caudal. Anal III., 9; third spine longest, ’ 
length of head ; middle soft rays produced, like the dorsals. Caudal deeply emar- 
ginate, crescentic, the rays at the angles produced. Caudal peduncle, i£ as long as 
deep. Scales finely denticulate on the edge, 60 63 5 lat. 1, ^ ~ \z * “PF* 1 
lateral line nearly complete, extending on the caudal peduncle. Bluish above, white 
beneath ; a few ill-defined yellow streaks along the body ; some yellow marblings on 
the postocular part of the head ; fins white, w ith some yellow streaks on the dorsal 
and anal, and between the ventral and caudal rays. 
Total length, 1 10 millim. 
Described from two specimens from Kinyamkolo. 
Closely allied to P. ventralis ; distinguished by much smaller scales. 
47. Paratilapia stenosoma. — Blngr. 1901. (Fig., p. 21 1.) 
Body very strongly compressed, its depth equal to the length of the head and 
contained 2} to 3 times in total length. Profile of snout descending in a straight 
or slightly convex line ; lower jaw projecting beyond the upper ; diameter of eye 
nearly equal to length of snout or interocular width, 3J to 3.J times in length of 
head ; maxillary not extending to below anterior border of eye ; teeth small, in two 
or three rows, the outer very slightly larger than the others ; two series of scales on 
the cheek ; very thin scales on the opercle. Gill-rakers rather long and closely set, 
19 to 23 on lower part of anterior arch. Dorsal XV 7 ., 13; last spine longest, | 
length of head ; soft rays longer, sometimes produced into filaments. Pectoral 
pointed, a little shorter than head. Ventral reaching vent. Anal III., 12-13 ; third 
spine longest, a little stronger, but shorter than last dorsal spine. Caudal deeply 
emarginate. Caudal peduncle nearly twice as long as deep. Scales without mar- 
ginal denticulation, 60-68 ; lat. 1, — — . 
b 16 31—34 
Brownish above, silvery beneath, 
with or without blackish spots and longitudinal bands ; dorsal blackish at the end. 
Total length, 220 millim. 
Described from several specimens from Maswa and from the south end of Lake 
Tanganyika. 
48. Paratilapia leptosoma. — Blgr. 1898. (Fig., p. 201, lower.) 
Teeth small, in three series in the upper jaw, in four in the lower, outer largest. 
Depth of body, 4 to 4} times in total length ; length of head, 3. Snout with straight 
upper profile, as long as or a little longer than the eye, the diameter of which is 3.4 
to 3§ times in length of head, and equals interorbital width ; maxillary extending to 
below anterior border of eye, or not quite so far ; two series of scales on the cheek ; 
opercle covered with scales. Gill-rakers long, slender and close set, 20 on lower 
part of anterior arch. Dorsal XII., 14-15 ; spines increasing in length to the last, 
which measures ? length of head, and is nearly as long as the soft rays. Pectoral \ 
length of head. Ventral reaching origin of anal. Anal III., 10-12 ; third spine 
longest, a little shorter than longest dorsal. Caudal feebly emarginate. Caudal 
