MOKMYKOPS. 3o 



length of snout, 2 to 3 times in interocular width. Dorsal 25-28, 

 f- to § length of anal, originating 2 to 1\ times as far from end of 

 snout as from root of caudal. Anal 39-42, originating considerably in 

 advance of dorsal, its 10th to 12th ray corresponding to first of latter, 

 and at equal distance from head and root of caudal. Pectoral rounded 

 or very obtusely pointed, \ to f length of head. Caudal rather small, 

 with rounded lobes, greater part covered with scales. Caudal peduncle 

 about twice as long as deep, f to \ length of head. 87-96 scales in 

 lateral line, .^r^ in transverse series on body, j^Ti ^ n transverse series 

 between dorsal and anal, 20 round caudal peduncle. Olive or greyish 

 brown above, whitish beneath, sometimes dotted all over with black. 



Total length 310 millim. 



Lower Nile. 



Dr. Riippell (C). 



J. Petherick, Esq. (C). 

 Capt. S. Flower (P.). 

 L. Loat, Esq. (C). 



1. Ad. 



Nile. 



2. Ad., skel. 



55 



3. Ad. 



Lower Nile. 



4. Rgr. 



Nile near Cairo. 



5-7. Hgr. 



Beni Souef. 



8-10. Ad. & hgr. 



Sanhur, near Beni Souef. 



11-12. Ad. & hgr. 



Luxor. 



13. Hgr. 



Assuan. 



3. MORMYROPS LONGH'EPS. 

 Giinth. Ann. & Mag. N. H. (3) xx. 1867, p. 117 ; Bouleng. Proc. Zool. Soc. 



1898, p. 783. 

 Mormyrus longiceps, Giinth. Proc. Zool. Soc. 1899, p. 731. 



Depth of body 6^ to 7 times in total length, length of head 4 times. 

 Head a little more than twice as long as deep, upper profile nearly 

 straight, declivous ; snout rounded, nearly \ length of head, slightly 

 projecting beyond mouth, the width of which equals length of snout 

 and once and \ interocular width ; teeth feebly notched, ^n 5 e ye 

 small, in anterior third of head, its diampter twice in length of snout, 

 once and \ in interocular width. Dorsal 2b'-29, about f or f length of 

 anal, originating twice as far from end of snout as from base of caudal. 

 Anal 39-45, originating considerably in advance of dorsal and a little 

 nearer head than root of caudal. Pectoral rounded, a little more than 

 \ length of head. Caudal rather small, densely scaled, with rounded 

 lobes. Caudal peduncle twice as long as deep, f length of head. 

 86-90 scales in lateral line, ^ in transverse series on body, 21 in 



d2 



