1 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, ij as long as 



4 — 5 54 — 55 

 deep. Scales finely denticulate on the edge, 60-63 — ; lat. 1, — ; upper 



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, with some yellow streaks on the dorsal 

 and anal, and between the ventral and caudal rays. 



Total length, no millim. 



Described from two specimens from Kinyamkolo. 



Closely allied to P. ventralis ; distinguished by much smaller scales. 



47. Paratilapia stenosoma. — Blngr. 1901. (Fig., p. 211.) 



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, 3^ to 3^ 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., 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, - — . Brownish above, silvery beneath, 

 b 16' 31—34 



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 43 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^ 

 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 



