22 DR. A. GUNTHER ON NEW SPECIES OF MORMYRUS. [Jan. 26, 
yellowish-white here and there, with a few dark blotches ; head and 
neck jet-black above and below. ‘Total length 7! 10". 
Hab. Port Denison. 
3. Description oF A New SpPEciEs or Mormyrvs. 
By Dr. A. GUNTHER. 
(Plate II.) 
Only a short time ago I described* a peculiar species of Mormyrus, 
M. petersii, distinguished by a very long mandibulary flap. I have 
the pleasure to lay to-day before the Society another species with the 
same structure of the fins, and with a similar prolongation of the 
lower jaw. It comes, like M. petersii, from West Africa. The 
peculiar form of the snout has suggested the specific name of 
Mormyrus TAMANDUA. (PI. II. fig. 1.) 
D. 28. A.3l. V.6. L. lat. 80. Body compressed, rather 
elongate—its greatest height, between the origin of the dorsal and 
anal fins, being two-ninths of the total length (without caudal) ; the 
length of the head is one-fourth of the same. The snout is much 
prolonged, tubiform, slightly tapering, and curved downwards, the 
distance between the eye and the end of the mandibulary flap being 
twice that between the eye and the gill-opening. The mouth is very 
small, at the extremity of the snout, with the jaws equal, and armed 
with two pairs of feeble conical teeth above and below. The mandi- 
bulary flap is as long as the eye. The eye is covered with the skin, 
but appears through from below it. The pectoral is nearly twice as 
long as the ventral, and extends beyond its base. The dorsal and 
anal fins are opposite each other, and placed on the caudal portion 
of the body, the origin of the former being in the middle between 
the occiput and the root of the caudal. The scales on the trunk are 
rather small and irregularly arranged, but become gradually larger 
and more regular posteriorly. Coloration uniform. 
The single specimen obtained is 10 inches long. 
We add, for comparison, the diagnosis of the other species men- 
tioned above : — 
Mormyrus petersi. (PI. II. fig. 2.) 
D. 27. A. 34. L. lat. 66. The mandible is prolonged into a 
long, conical fleshy appendage, which is nearly half as long as the 
head. Dark brown, with two lighter cross bands. 
Hab. Old Calabar. 
* Wiegm. Arch. 1862, p. 64. 
