1901.] nSHES FROM LAKE VICTOEIA. 161 



5. Claeias lazeka C. et V. 



6. SmroDONTis aeeo-fischbei Hilgend. 



Hilgendorf, Sitzb. Ges. nat. Fr. Beii. 1888, p. 77; Pfeffer, 

 Thierw. O.-Afr., Fische, p. 37 (1896). 



The following description is taken from the single specimen 

 sent by Sir Harry Johnston : — 



Body compressed, its depth equal to the length of the head 

 and contained 3f times in the total length. Head little longer 

 than broad, granulate above, the granulate area extending on the 

 snout to half-way between nostrils and eyes ; frontal fonta- 

 nelle large ; snout rounded, a little shorter than postocular part 

 of head ; interorbital region slightly convex, its width half length 

 of head ; eye supero-lateral, its diameter 5 times in length of head, 

 twice in interorbital width ; occipital region neither keeled nor 

 teetiform, simply convex. Lips moderately developed ; maxillary 

 barbel simple, a httle longer than the head, extending to anterior 

 third of pectoral spine ; mandibular barbels inserted on a straight 

 transverse line, the outer f length of head and with slender simple 

 branches, the inner ^ length of head and with shorter but ramified 

 branches. Prasmaxillaiw teeth small and numerous, forming a broad 

 band ; anterior mandibular teeth small, curved, f the diameter of 

 the eye, 44 in number. Gill-cleft not extending inferiorly beyond 

 the base of the pectoral fin. Nuchal shield convex, not keeled, 

 rugose and pitted, 1^ as long as broad, ending in two sharp points, 

 which extend a little beyond the base of the dorsal spine. Humeral 

 process covered with granular asperities, about fi as long as 

 broad, sharply pointed, not extending qaite so far back as the 

 occipito-nuchal shield. Skin villose on the sides of the anterior 

 part of the body. Dorsal I 7 ; spine strong, 1| as long as the 

 base of the fin, nearly as long as head, striated and armed behind 

 with 11 retrorse serree. Adipose dorsal 3^ times as long as deep, 

 I5 as long as its distance from the rayed dorsal, | the length of 

 the head. Anal III 8, Pectoral spine very strong, as long as 

 that of the dorsal, striated, with 31 to 33 strong teeth on the 

 anterior border and 11 much stronger still and retrorse on the 

 posterior border. Ventral not reaching anal. Caudal very deeply 

 notched, crescentic. Dark brown above and beneath, with some 

 lighter, yellowish-brown marbliugs ; fins dark grey, with transverse 

 series of blackish spots having a tendency to form cross-bars. 



Total length 135 millim. 



7. Paeatilapia seebanus. 



Hemichromis serranus, Pfeffer, Thierw. O.-Afr., Fische, p. 23 

 (1896). 



Paratilapia serranus, Bouleng. Proc. Zool. Soc. 1898, p. 143. 



Adult specimens, measuring 125 millim., agree well with 

 Pfeffer's description, drawn up from an example obtained by 

 Stuhhnann at Bukoba, a German station of L. Victoria at about 



Proc. Zool, Soc— 1901, Vol. II, No. XI. 11 



