OF FISHES FEOM LAKE- TANGANYIKA. 13 



This species, which I have mnch pleasure in naming after the distinguished zoologist 

 of Hamburg, Dr. G. Pfeifer, who has much contributed to our knowledge of East 

 African ichthyology, is nearest allied to P. intermedia Gthr., from Nyassa. 



12. Pabatilapia macrops, sp. n. (Plate III. fig. 2.) 



Teeth small, in 3 series in each jaw, forming a narrow band, outer largest. Depth 

 of body three times in total length ; length of head 2| to 3. Snout with straight upper 

 profile, a little shorter than the eye, the diameter of which is 2| times in length of 

 head and exceeds interorbital width ; maxillary extending to below anterior border of 

 eye ; 2 or 3 series of scales on the cheek ; large scales on the opercle. Gill-rakers 

 short, 11 on lower part of anterior arch. Dorsal XVI 10-12; spines increasing in 

 length to the sixth, which measures a little less than ^ length of head and equals 

 longest soft rays. Pectoral as long as head. Ventral extending a little beyond origin 

 of anal. Anal III 6-7 ; third spine longest, a little shorter than longest dorsal. 

 Caudal with crescentic emargination. Caudal peduncle as long as deep. Scales very 

 finely denticulate on the edge,' 33-34^; lat. 1. j^,; upper lateral line complete, 

 extending to base of caudal. Pale brownish above, silvery beneath ; a series of five 

 indistinct dark blotches on each side of the body ; spinous dorsal edged with brown 

 above. 



Total length 70 millim. 



Two specimens from Kinyamkolo, and one from Mbity Rocks. 



Closely allied to the preceding species; distinguished by the larger eye, the complete 

 upper lateral line, the longer pectoral, and the more strongly emarginate caudal. 

 Connects the preceding species with the following, which represents a more aberrant 

 type. 



13. Paeatilapia ventealis, sp. n. (Plate III. fig. 3.) 



Teeth very small, in 2 series in both jaws, the outer larger and tipped with brown. 

 Depth of body 2f to 3 times in total length, length of head 3. Snout with curved 

 upper profile, a little shorter than the eye, the diameter of which is 2f to 2| times 

 in length of head and exceeds interorbital width ; maxillary extending to below 

 anterior fourth of eye ; 2 or 3 series of scales on the cheek ; large scales on the 

 opercle. Gill-rakers rather long, lanceolate, 17 to 19 on lower part of anterior arch. 

 Dorsal XII-XIII 13-14; spines increasing in length to the eighth or ninth, which 

 measures nearly |- length of head and | or | longest soft rays. Pectoral a little longer 

 than head. Ventral much produced, extending far beyond the origin of the anal, 

 especially in the males, in which it may reach the end of the caudal. Anal III 9-10 ; 

 third spine longest, about f length of head ; middle soft rays produced, nearly as long 

 as head. Caudal deeply emarginate, crescentic. Caudal peduncle IJ as long as deep. 



