BAGRIIS. 



309 



Bagrus docmac, Riipp. Besclir. u. Fische Nil, p. 5 (1829); Ouv. & Val. Hist. Poiss. 

 xiv. p. 404 (1839); Guntli. Cat. Fish. v. p. 70 (1864), and Petherick's Trav. 

 ii. p. 228 (1869); Vincig. Ann. Mus. Genova, (2) xix. 1898, p. 245; Bouleng. 

 Fish. Nile, p. 237, pi. lviii. (1907). 



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

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

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

 separated from interneural bone ; snout broadly rounded, projecting 



1-1 (young) to 4 times as long as eye, which is 5 



beyond the lower jaw, . 



Fig. 246. 



Bagrus docmac. 

 Nile Delta (F. Is.). A. 



(young) to 12 times in length of head and If to 3f times in interocular 

 width ; width of mouth 2 to 2-g- times in length of head ; prsemaxillary 

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

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

 to -J length of head ; maxillary barbel If (adult) to 3^ times length of 

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

 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 P), 

 last ray in advance of vertical of inner ray of ventral; spine smooth, 

 moderately strong, not \ 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, from which it is 



