from the Ogoioe River and Old Calabar. 283 



the origin of the dorsal fin. Eye one fourth of the length of 

 the head. The height of the body is contained 2§ times in 

 the total length (without caudal), the length of the head four 

 times. Caudal peduncle slender, much shorter than the head 

 (measured from the last anal ray), its depth being contained 

 2§ times in its length. The origin of the dorsal fin is behind 

 that of the anal and midway between the root of the caudal 

 and end of the opercle. The anal extends also further back- 

 wards than the dorsal. Pectoral fin shorter than the head, 

 reaching rather beyond the middle of the ventral. Ventral 

 fin only half as long as the pectoral or as the distance of its 

 root from the vent. Scales of moderate size ; there are twelve 

 or thirteen in an oblique series running from the first anal ray 

 to the lateral line, and three and two half longitudinal series 

 on the side of the caudal peduncle. Silvery, brownish 

 above ; anterior part of the dorsal blackish. 



millim. 



Total length 130 



„ „ without caudal 106 



Length of the head 25 



Diameter of the eye 6 



Width of the mouth 5-5 



Height of the body 41 



Length of the caudal peduncle 20 



There are some slight discrepancies between this and 

 Sauvage's descriptions, which are quite within the limits of 

 individual variation. Besides, our specimens from Tala- 

 gouga belong to the same district as Sauvage's, which came 

 from Doume' (Ogowe). Steindachner's description is more 

 precise and his figure more accurate; he compared the 

 species with M. Sauvagii (Blgr.), which, however, has a 

 much wider mouth. The specimens described by Stein- 

 dachner came from Liberia. Thanks to Dr. Jentink's kind- 

 ness I have been able to compare the latter with those 

 collected by Miss Kingsley. 



Mormyrus Sauvagii. 



Mormyrus (Petrocephahis) Sauvagii, Boulenger, Ann. & Mag. Nat. 

 Hist. 1887, xix. p. 149. 



Warri. 



Mormyrus qffinis. 



/uvage, Bull. Soc. 

 us) affinis, Sauva<; 



I refer a young specimen, 86 millim. long, from Talagouga 



Petrocephalus affinis, Sauvage, Bull. Soc. Philom. 1878, p. 101. 

 Mormyrus {Petrocephalus) affinis, Sauvage, N. Arch. Mus. iii. 1880, 

 p. 52, pi. ii. fig. 2. 



