ALESTES. 



117 



3 Polkom, Baro R. (Sobat).— Zaphiro, 4.04. 



6 Mouth o£ L. No.— Loat, 31.1.01. 



8 Gondokoro.— Loat, 17.1.02-4.2.02. 



1 Fajao, Victoria Nile.— Budgett, 25.8.02. 



1 Tsutyaba, Lake Albert.— Budgett, 8.8.02. 



1 Lake Chad.— Capt. Gosling, 1904. 



5 St. Louis, Senegal.— Delhez, 1899. 



5 Kaedi, Senegal.— Delhez, 1899. 



3 Gambia.— Budgett, 1899. 



1 Gambia.— Lord Derby. 



2 Jebba, Upper Niger.— Dr. G. Christy, 1899. 

 1 Lokoja, Upper Niger. — Budgett, 1903. 



1 R. Benue, north of Ibi— Norton Smith, 1906. 



"_R%" (j^l.) is the name given to this fish, as well as to A. baremose, at Cairo 

 and in the Fayum. According to Ruppell it is also called " Bachis " at Cairo. Bears 

 the name " ko'wara " (*jl*£) at Omdurman. 



2. ALESTES BAEEMOSE. 

 (Plate XVIII. fig. 2.) 



Salmo niloticus (non Hasselquist), Linnaeus, Syst. Nat. i. p. 514 (1766). 



Salmo dentex, part., Linnaeus^ t. c. p. 531. 



Myletes baremose, Joannis, Mag. Zool. 1835, iv. pi. vi. 



Myletes hasselquistii (non Cuvier), Guerin, Icon. R. An., Poiss. pi. lvi. fig. 1 (1844). 



Alestes kotschyi, Heckel, Russegger's Reise Egypt, iii. p. 308, pi. xxi. fig. 3 (1849) ; Giinther, Cat. 



Fish. v. p. 313 (1864), and Petherick's Trav. ii. p. 242 (1869) ; Steindachner, Sitzb. Ak. 



Wien, lxi. i. 1870, p. 543 ; Yinciguerra, Ann. Mus. Genova, (2) xix. 1898, p. 257. 

 Alestes wytsi, Steindachner, 1. c. p. 542, pi. ii. fig. 1. 

 Alestes baremose, Boulenger, Ann. & Mag. N. H. (7) viii. 1901, p. 488. 



Body strongly compressed, its depth three and three-fourths to five times in the 

 total length (three and three-fifths times in a specimen from the Gambia); length 

 of head four to five and two-thirds times. Head twice to twice and a half as long 

 as broad, once and one-third to once and two-fifths as long as deep ; snout rounded, 

 not projecting beyond the lower lip, as long as the eye (shorter in the young) ; eye 

 lateral, visible from above and from below, its diameter three (young) to four times 

 in the length of the head ; adipose eyelid well developed, but thin and transparent, 

 covering part of the eye in front and behind ; interorbital region very convex 3 its 

 width two and five-sixths to three and a half times in the length of the head ; w T idth 

 of mouth equal to or a little less than the diameter of the eye ; maxillary not reaching 

 to below the anterior border of the eye ; 14 teeth (§) in the upper jaw, 10 (^) in the 



