142 MB. 6. A. BOTTLENGEB ON THE AFBICAK AND [Mar. 1, 



increasing in length to the eighth, which measures 1| diameter of 

 eye ; longest soft rays not J length of head. Pectoral moderately 

 long. Ventral reaching origin of anal. Anal III 9. Caudal 

 almost entirely scaly. Caudal peduncle as long as deep. Scales 

 finely denticulate on the border, 32 j't.. Pale greenish grey, darker 

 on the back, dotted all over with small brown spots, one to each 

 scale ; cheeks reddish ; a large bluish-black opercular spot ; dorsal 

 with rather irregular dark streaks ; caudal spotted between the rays. 



Total length 160 millim. 



Victoria Nyanza. 



9. Paratilapia reteodens. 



Paratilajyia? retrodens, Hilgend. Sitzb. Gres. nat. Fr. Berl, 

 1888, p. 76. 



Bemichromis retrodens, Pfeffer, Thierw. O.-Afr., Fische, p. 19 

 (1896). 



Teeth in broad bands in both jaws, in 7 series in the upper, in 9 

 in the lower, outer series largest. Depth of body equal to length 

 of head, 2| times in total length. Snout with convex upper profile, 

 slightly longer than the diameter of the eye, which is somewhat 

 more than 4 times in length of head and 1^ in interorbital width ; 

 maxillary extending to below anterior bord'er of eye ; 6 series of 

 scales on the cheek ; large scales on the opercle. Larger gill- 

 rakers expanded and denticulate. Dorsal XVI 9 ; middle spines 

 2| in length of head ; soft rays long. Pectoral and ventral long 

 and pointed, reaching beyond middle of base of aual. Anal III 9. 

 Caudal almost entirely scaly. Caudal peduncle 1§ as deep as long. 

 Scales finely denticulate on the border, 30 -Jj. Eeddisb grey, 

 with a broad dark brown stripe from the gill-opening to the base 

 of the caudal, and another, less developed, from the nape along 

 the base of the dorsal ; a black opercular spot ; breast and belly 

 with dark spots, one to each scale ; two large bluish-white ocelli 

 close together on the posterior part of the aual ; dorsal and caudal 

 grey ; pectorals greyish ; ventrals black. 



Total length 140 millim. 



Victoria Nyanza. 



10. Paratilapia afra. 



Hemichromis afer, Giinth. Proc. Zool. Soc. 1893, p. 626, pi. Ivij. 



Teeth in 3 series in both jaws, outer largest. Depth of body 

 nearly equal to length of head, 3 times in total length. Snour 

 with convex upper profile, as long as the eye, which is 3^ times 

 in length of head, and equals or slightly exceeds interorbital 

 width ; maxillary not extending to below anterior border of eye ; 

 3 or 4 series of scales on the cheek ; large scales on the opercle. 

 Gill-rakers short, 13 or 14 on lower part of anterior arch, the 

 largest T-shaped. Dorsal XVII 8 ; spines increasing in length 

 to the last, which measures f length of head and about | longest 

 soft rays. Pectoral | length of head. A'^entral reaching vent. 



