SYNODONTIS. 



429 



back, and adipose fin ; fins grey or olive, with numerous small round 

 black spots ; fringe of maxillary barbels black. 



Total length 195 millim. 



White Nile. 



1. One of the types. Goz abu Gumah. L. Loat, Esq. (C.). 



24. SYNODONTIS NIGMTA. 

 Ciiv. & Yal. Hist. Poiss. xv. p. 265, pi. ccccxli. (1840); Giintli. Cat. Fish. v. 

 p. 214 (1864); Steind. Sitzb. Ak. Wien, lxi. i. 1870, p. 585; Vaill. N. Arch. 

 Mus. (3) viii. 1896, p. 149, & vii. pi. xiii. fig. 1 ; Werner, Sitzb. Ak. Wien, 

 cxv. i. 1906, p. 1141 ; Bouleng. Fish. Nile, p. 366, pi. lxxi. fig. 1 (1907). 

 Hemisynodoniis niprita, Bleek. Nederl. Tijdschr. Dierk. i. 1863, p. 55. 



Depth of body 3 to 3| times in total length, length of head 3 to 3£ 



Fig. 322. 



Synodontis nigrita. 



times. Head a little longer than bread, rugose, granulate above from 

 between the eyes ; snout rounded, as long as postocular part of head : 

 eye superolateral, 4 to 5-j times in length of head, H to '2\ times in 

 interorbital width ; lips moderately developed ; prsemaxillary teeth 

 forming a short and broad band; movable mandibular teeth not more 

 than ^ diameter of eye, 30 to 35 in number. Maxillary barbel with a 

 broad marginal membrane in its basal third, 1 to ]§ times length of 

 head, reaching between anterior and posterior fourth of pectoral spine ; 

 cuter mandibular barbel about twice as long as inner, both with short, 



