PELMATOCHEOMIS. 



419 



bright yellow, the ventral black on the outer side; two large round 

 orange spots, encircled with red, on the posterior part of the anal fin. 



Total length 145 millim. 



Lake Victoria. 

 1. Type. Buganga. Mr. E. Degen (C). 



32. PELMATOCHEOMIS CAVIFEONS. 



Faratilapia? cavifrons, Hilgend. Sitzb. Ges. nat. Fr. Bed. 1888, p. 77 ; Bouleng. 



Proc. Zool. Soc. 1898, p. 141. 

 Hemichromis cavifrons, Pfeff. Tliierw. O.-Afr., Fische, p. 21 (1896). 

 Pelmatocliromis cavifrons, Bouleng. Fisli. Nile, p. 485, pi. Ixxxviii. fig. 1 (1907), 



and Ann. Mus. Genova, (3) v. 1911, p. 68. 



Depth of body 2^ to 3^ times in total length, length of head 2\ to 

 2f times. Head large, 2 to 2f times as long as broad ; snout with 

 slightly convex upper profile, as long as broad or a little broader than 

 long, about twice as long as eye, which is 5 to 5J times in length of 



Fiff. 287. 



Fehnatochromis cavifrons. 

 Buganga (F. N.). f. 



head, 1| to 1^ times in interorbital width and equals prseorbital depth ; 

 mouth large, very oblique, not extending quite to below anterior border 

 of eye ; lower jaw strongly projecting ; teeth in 4 or 5 series, a few of 

 the inner sometimes tricuspid, outer large and strongly curved, 60 to 

 70 in outer series of upper jaw; 5 or 6 series of scales on the cheek, 

 width of scaly part greater than diameter of eye. Gill-rakers mode- 

 rately long and stout, 7 to 9 on lower part of anterior arch. Dorsal 

 XV-X VI 8-10 ; spines increasing in length to the last, which measures 



2e 2 



