PAEATILAPIA. 469 



yellow in the females, black in the male ; anal fin uniform yellow in the females, 

 deep orange, with one or two large orange ocellar spots encircled with red, in the 

 males. 



Grows to a length of 230 millimetres. 



A female measuring 160 millimetres, obtained at Bunjako by Mr. Degen in the 

 beginning of November, has a number of embryos in the pharynx. These embryos 

 measure about 15 millimetres, the yolk-sac 4. 



This species inhabits Lake Victoria. It is here decribed from nine specimens from 

 Bunjako (5-14.11.05), six from Entebbe (25.6.05, 27.9.05), and one from Buganga 

 (28.11.05), forming part of the valuable collection made by Mr. E. Degen. 



The type of the species, from the late Dr. G. A. Fischer's collection, is preserved in 

 the Berlin Museum. Dr. Pappenheim has been so kind as to send me a photograph 

 of it, together with the information that the number of dorsal spines is 14, as correctly 

 stated by Hilgendorf, not 13 as given in Pfeffer's description. 



2. PAEATILAPIA PROGNATHA. 



(Plate LXXXVI. fig. 3.) 



Pellegrin, Mem. Soc. Zool. France, xvi. 1904, p. 181, pi. xvi. fig. 4. 

 Paratilapia serranus } part., Boulenger, Proc. Zool. Soc. 1901, ii. p. 161. 



Intermediate between P. longirostris and P. serranus. Distinguished from the 

 former by the larger eye, the diameter of which is three and one-third (young) to 

 five times in the length of the head, equal to or slightly less than the interorbital 

 width, and equal, or nearly equal, to the depth of the scaly part of the cheek ; from the 

 latter by the strongly projecting lower jaw, the chin being pointed. Dorsal fin with 

 14 to 16 spines and 8 to 10 soft rays. Scales 32-36 xizn? lateral lines jiEii- 



Coloration similar to that of P. serranus , one or two dark lateral stripes being 

 usually present. 



The largest specimen measures 170 millimetres. 



Lake Victoria. 



I have examined the following specimens : — 



2 Kavirondo Bay. — Alluaud, 1904. (Types.) 



10 Entebbe.— Degen, 25.6-27.9.05. 



2 Bunjako. — Degen, 5-14.11.05. 



2 L. Victoria. — Sir Harry Johnston, 1900. 



