BAGKUS. 



309 



Bar/rus docnia;, Tviipp. Besclir. n. Fisclie Nil, p. 5 (1821)); (!uv. &Val. Hist. Poiss. 

 xiv. p. 404 (1839); Giinth. Cat. Fish. v. p. 70 (18G4), and Petlierick's Truv. 

 ii. p. 228 (18G9); Vineig. Ann. Mus. Geneva, (2) xix. 1898, p. 245; Bouleng-. 

 Fish. Nile, p. 2;57, pi. Iviii. (1907). 



Depth of body 4 to 5 J times in total length, length of head 3j to 4 

 times. Head much depressed, 1^^ to If times as long as broad, smooth 

 above ; occipital process long and narrow, in contact with or narrowly 

 se})arated from interneural bone; snout broadly rounded, projecting 

 beyond the lower jaw, If (young) to 4 times as long as eye, which is 5 



Fis. 240. 



Bagrus docmac. 

 Nile Delta (F. N.). i. 



(young) to 12 times in length of head and ]| to 3| times in interocular 

 width ; width of mouth 2 to 2^ times in length of head ; praemaxillary 

 band of teeth 5 to 7 times as long as broad, a little sliorter than and 

 about as broad as the band of vomerine teeth. Nasal barbel ^ (adult) 

 to I length of head; maxillary barbel If (adult) to oj times length of 

 head, reaching ventral or not quite so far in adult, anal or caudul 

 peduncle in young; outer mandibular barbel If to 2^ times length of 

 inner, and f to 1^ times length of head. Gill-rakers rather long, widely 

 set, 9 to 12 on lower part of anterior arch. Dorsal I 8-10 (usually 9), 

 last ray in advance of vertical of inner ray of ventral ; si)ine smootli, 

 moderately strong, not 4 length of head ; anterior soft rays more or less 

 produced into filaments in the adult. Adipose dorsal 4 to 5 times as 

 long as deep, If to 2 times as long as rayed dorsal, fnun which it is 



