BAGRUS. 



309 



Bagvus docmas, Riipp. Besctir. n. Fisclie Nil, p. 5 (1829); Cuv. & Val. Hist. Poiss. 



xiv. p. 404 (1839); G until. Cat. Fish, v. p. 70 (1804), and Petherick's Tray. 



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



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

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

 separated from interneural bone; snout broadly rounded, projecting 

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



Fig. 240. 



Bagrus docrnac. 

 Nile Delta (I\ N.). 



(young) to 12 times in length of head and 1-| to of times in interocular 

 width; width of mouth 2 to 2^ 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 -^ 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-j 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 



