480 cichluxze. 



and 8 to 10 soft rays; spines subequal from the seventh or eighth, about two-fifths 

 the length of the head; longest soft rays half to two-thirds the length of the 

 head. Anal fin with 3 spines and 8 or 9 soft rays ; third spine as long as and 

 stronger than the longest dorsal. Pectoral fin pointed, as long as or a little 

 shorter than the head, reaching the vertical of the origin of the anal. Ventral fin 

 reaching the vent or the origin of the anal. Caudal fin truncate-rounded, the upper 

 rays usually longer than the lower. Caudal peduncle once and one-third to once and 

 a half as long as deep. Scales feebly denticulate, 31-35 nr[3' lateral lines yor^. 



Bright yellow (according to a sketch by Mr. Degen), irregularly blotched or marbled 

 with black, the black sometimes forming irregular cross-bands on the body ; one 

 or two pale yellow ocellar spots may be present on the posterior part of the anal fin ; 

 iris yellow or bronzy brown, with a red circle round the pupil. 



Total length 155 millimetres. 



Lake Victoria. Tw T enty-one specimens were obtained at Bunjako (5-14.11.05) and 

 Buganga (15-17.11.05) by Mr. E. Degen. 



9. PABATILAPIA RETRODENS. 

 (Plate LXXXIX. fig. 2.) 



Hilgendorf, Bitzb. Ges. nat. Fr. Berl. 1888, p. 76 ; Boulenger, Proc. Zool. Soc. 1898, p. 142. 

 Hemicliromis retrodens, Pfeffer, Thierw. 0.-A£r., Fisclie, p. 19 (1896). 



Depth of body twice and a half to three times in the total length, length of head 

 three to three and one-fourth times. Upper profile of head forming a strong curve ; 

 snout short and broad, as long as or a little longer than the eye, which is three and 

 a half to four times in the length of the head, a little less than the interorbital width 

 and once and one-fourth to once and one-third the least width of the prseorbital ; 

 lower jaw not projecting; mouth not very oblique, with very thick lips; maxillary 

 extending to below anterior border of eye, or not quite so far ; teeth in six to eight series 

 in both jaws, 26 to 40 in the outer row of the upper jaw, the outer large and conical 

 in the adult, sometimes oblique on the sides, more or less distinctly bicuspid in the 

 young, the others conical or tricuspid ; four to six series of scales on the cheek, the 

 depth of the scaly part below the eye equal to the diameter of the eye. Gill-rakers short 

 and stout, 8 or 9 on lower part of anterior arch, the larger bifid or T- or anvil-shaped. 

 Dorsal fin with 15 or 16 spines and 9 or 10 soft rays ; spines increasing in length 

 to the last, which measures two-fifths to half the length of the head ; longest soft 

 rays half to three-fourths the length of the head. Anal fin with 3 spines and 9 or 

 10 soft rays ; third spine longest, as long as or a little shorter and stouter than the last 

 dorsal. Pectoral fin pointed, as long as the head or slightly shorter, extending as far 

 as the origin of the anal, or a little beyond. Ventral fin reaching the origin of the 



