ALESTES. 



205 



feebly developed ; interorbital region moderately convex, its width 

 3 times in length of head ; maxillary not reaching to below anterior 

 border of eye ; 16 teeth (|) in upper jaw, 10 (|) in lower; lower border 

 of second suborbital as long as eye. Gill-rakers long and slender, 

 20-27 on lower part of anterior arch. Dorsal II-III 8, originating 

 above base of ventrals, at equal distance from end of snout and from 

 caudal, longest ray nearly as long as head. Anal III-IV 15-16. 

 Pectoral | length of head, not reaching ventral. Caudal deeply forked. 

 Caudal peduncle 1^ to If times as long as deep. Scales without 



Fig. 154. 



Alestes lateralis. 

 Type (A. M. C). f 



arborescent or anastomosing canals, 30-33 '—, 2 between lateral line and 

 root of ventral. Silvery, darker on the back ; a blackish lateral band, 

 extending to median rays of caudal. 



Total length 120 millim. 



Katanga (Lake Dilolo), Zambesi, Zululand, Natal. — Types in Congo 

 Museum, Tervueren. 



1. One of the types. 

 2-.t. Ad. 

 5-6. Ad. 

 7. Ad., type of 

 A. natalensis. 



Lake Dilolo, Katanga. 

 Kafue R., Upper Zambesi. 

 Elcheleselwane, Zululand. 



Natal. 



Capt. Lemaire (C). 



T. Codrington, Esq. (P.). 



Dr. E. Warren (P.). 



J. F. Quekett, Esq. (P.). 



12. ALESTES NURSE. 

 Myletes nurse, Rupp. Fortsetz. Beschr. Fische Nil, p. 12, pi. ii. fig. 3 (1832). 

 Myletes guile, Joannis, Mag. Zool. 1835, iii. pi. ix. 

 Alestes nurse, Miill. & Trosch. Hor. Ichthyol. i. p. 13 (1845) ; Cuv. & Val. Hist. 



Poiss. xxii. p. 188 (1849) ; Giiuth. Petherick's Trav. ii. p. 343 (1869) ; 



Steind. Sitzb. Ak. Wien, Ixi. i. 1870, p. 544 ; Bouleng. Ann. & Mag. N. H. 



(7) viii. 1901, p. 488 ; Lonnb. Ann. & Mag. N. H. (1) xii. 1903, p. 37 ; 



