MORMYRUS. 61 



rounded or obtusely pointed, three-fifths to two-thirds the length of the head ; ventral 

 fin about two-fifths the length of the head. Caudal fin with rounded lobes, for the 

 greater part covered with scales. Caudal peduncle two-fifths to one-half the length 

 of the head, once and two-fifths to twice as long as deep. 88 to 96 scales in the 

 lateral line, |^9 in a transverse series on the body, at the origin of the dorsal fin, 

 H^l in a transverse series at the origin of the anal fin, 28 or 30 round the caudal 



peduncle. 



Valenciennes has described the coloration as uniform plumbeous above, washed 

 with greenish on the head and fins, the cheeks iridescent with yellow and blue with 

 a golden sheen, the dorsal fin with oblique dark lines (fin-rays'?). According to 

 Mr. Loat's notes taken at Fashoda, the upper parts are dark grey with gold and pink 

 reflexions, the lower parts whitish with gold reflexions ; the fins mostly greyish, very 

 slightly tinged with yellow. 



This Morrnyr is not known to exceed a length of 35 centimetres. 



The only known specimens are the types, four in number, measuring 23 to 35 

 centimetres, procured by Geoffroy Saint-Hilaire in the Lower Nile, and preserved 

 in the Paris Museum, where I was allowed to take a description of them ; six obtained 

 by Mr. Loat in the White Nile and in the Bahr-el-Gebel — 



5 Fashoda, 18-26.3.01 ; 

 1 Kenisseh, 4.4.02 ; 



and one from Polkom, Baro Eiver (Sobat), 4.04, collected by Mr. Zaphiro and 

 presented to the British Museum by Mr. W. N. McMillan. 



2. MOPMYRUS KANNUME. 

 (Plate XII. fig. 1.) 



Mormyrus kannume, Forskal, Descr. Anim. p. 74 (1775) ; Marcusen, Mem. Ac. St. Petersb. (7) 



vii. 1864, no. 4, p. 114; Boulenger, Proc. Zool. Soc. 1898, p. 817; Hilgendorf, Zool. Jahrb., 



Syst. xxii. 1905, p. 418. 

 Mormyrus oxyrhynchus, I. Geoffroy, Descr. Egypte, Poiss. p. 270, pi. vi. fig. 1 (1827) ; Joannis, 



Mag. Zool. 1835, iv. pi. xiii. ; Cuvier & Valenciennes, Hist. Poiss. xix. p. 242 (1846) ; 



Giinther, Cat. Fish. vi. p. 216 (1866), and Petherick's Trav. ii. p. 253 (1869) ; Hilgendorf, 



Sitzb. Ges. naturf. Fr. Berl. 1888, p. 78. 

 Mormyrus bachigua, Cuvier & Valenciennes, t. c. p. 248. 

 Scrophicephalus k annum e, Ruppell, Verz. Mus. Senckenb. iv. p. 27 (1852). 



Depth of body three and a half to four and two-thirds times in total length, length 

 of head four to five times. Head about twice as long as broad in the young, longer 

 in the adult, the upper profile descending in a straight line or more or less strong 



