1. MORMYRUS. 217 



6. Mormyrus hasselquistii. 



Mormyrus Iierse, Lacep. v. pp. 621-623 (not Sonn.). 



caschive Geoffr. Descr. Eg. Poiss. i. p. 273, pi. 6. fig. 2. 



hasselquistii, Cuv. 8f Vol. xix. p. 253 ; Marcusen, Mormyr. p. 130. 



D. 70. A. 18. L. lat. 115. 'Vert. 21/29. 



Snout rather thick and obtuse, with the upper jaw somewhat pro- 

 jecting beyond the lower. Eye situated in the anterior third of the 

 length of the head, which is one-fourth of the total (without caudal). 

 Teeth very small, with their crown slightly emarginate. 



Nile ; West Africa. 



a. Half -grown. West Africa. Purchased of Mr. Dalton. 



7. Mormyrus macrophthalmus. 

 D. 64. A. 21. L. lat. 88. 



Snout much shorter Than in M. caschive and in the other species 

 allied to it ; it is compressed, and abruptly bent downwards, the 

 upper profile of the head being strori^ly curved ; it is not much longer 

 than the eye, which is large, two-sevenths of the leng& of the head. 

 Jaws equal anteriorlj', armed with small teeth, which are dilated and 

 truncated at their summits. The length of the dorsal is not quite 

 one-half of the total ; anal much higher than dorsal, its distance from 

 the caudal being one-fourth of the total length. Caudal forked to 

 the base, with the lobes slender and pointed. The pectoral extends 

 to, or nearly to, the root of the ventral, the length of which is two- 

 thirds of that of the pectoral. The height of the body is one-fifth of 

 the total length (without caudal), the length of the head one-sixth. 

 Coloration uniform, sides shining silvery. 



West Africa. 



a. Male, 13 inches long. Purchased of Mr. Dalton. 



II. Dorsal and analjins subeqval atid moderate in length ; snout long, 

 decurved. 



8. Mormyrus tamandua, 



Monnyrus tamandua, Giinth. Proc. Zool. Soc. 1864, January, pi. 2. 

 fig. 1. 



D. 28. A. 31. L. lat. 80. 

 Snout much prolonged, tubiform, tapering and curved downwards ; 

 the lower jaw terminating in a short skinny flap as long as the eye. The 

 distance between the eye and the gill-opening is half that between 

 eye and the end of the mandibulary flap ; eye rather small. Teeth 

 verj^ small, conical, few in number. Pectoral nearly twice as long 

 as the ventral, extending beyond its base. The height of the body 

 is two-ninths of the total length (without caudal), the length of the 

 head one-fourth. 

 West Africa. 



a. Type of the species. Purchased of Mr. Dalton. 



