156 CHAEACINID^. 



2 Jebelain, White Nile.— Loat, 10.1.01. 



1 Mouth o£ Lake No, White Nile.— Loat, 23.2.01. 

 15 Lake No.— Loat, 13.2.01. 



2 Yo River, Lake Chad. — Capt. Gosling, 1904. 

 2 St. Louis, Senegal.— Delhez, 1899. 



2 Gambia. — Budgett, 1898. 



1 Niger.— W. A. Forbes, 1883. 



1 Niger. 



10 Agberi, Lower Niger. — Dr. Ansorge, 1902. 



1 Assay, Lower Niger. — Budgett, 1903. 



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



This is the " Gammor el lelleh" or " Moon-fish," of the Arabs, so called from 

 its deep, silvery body. According to Mr. Loat, it bears the names "gammer" or 

 " gammera" (*,*» ^i) in Upper Egypt, "befcoy'ya" (juJoj) at Omdurman. 



Perfectly recognizable representations of it occur on the mural paintings of the 

 tombs at Giza and Sapara *, at Deir el Gebrawif, and on the tomb of Ti at Sakkara, 

 as I see from an unpublished photograph in the collection of Prof. Flinders Petrie. 



2. CITHARINUS LATUS. 



(Plate XXVI.) 



Muller & Troschel, Hor. Ichthyol. i. p. 9 (1845) ; Steindachner, Sitzb. Ak. Wien, lxi. i. 1870, 

 p. 539 ; PfefTer, Thiersv. O. Afr., Fische, p. 42 (1896) ; Boulenger, Ann. Mus. Congo, Zool. 

 i. p. 93 (1899). 



Depth of body once and three-fifths to twice in the total length, length of head 

 three and one-fifth to four times. Head once and four-fifths to twice as long as broad, 

 its upper profile more or less concave ; snout as long as or slightly longer than the 

 eye in the adult, shorter in the young, projecting slightly beyond the mouth ; diameter 

 of eye three and one-third (young) to four and a half times in length of head ; a 

 narrow adipose lid in front of and behind the eye ; interorbital width twice and one- 

 seventh to twice and a half in length of head; width of mouth twice and a half to 

 three times in length of head. Gill-rakers short, fine, closely set, 60 to 80 on lower 

 part of anterior arch. Dorsal fin with 20 to 22 rays, 4 or 5 of which are unbranched ; 

 anterior branched rays more or less produced, as long as or longer than the head ; the 

 fin originating behind the vertical of the base of the ventral and nearer the root of the 



* Lepsius, Denkinaeler, Abth. ii. pis. ix. & xlvi, 

 t Archseol. Surv. Egypt, xii. pis. iv. &> v. 



