mi MORMrRIDJE. 



9. Monnyms petersii. 



MormjTUS petersii, Gunih. Wieyni. Arch. 1862, p. 64, and Proc. Zool. 

 Soc. 1864, p. 22, pi. 2. fig. 2. 



D. 27. A. 34. L. lat. 66. 



Snout subcorneal, somewhat decurved, wath the mandible prolonged 

 into a long, conical, fleshy appendage, which is nearly half as long 

 as the head. Eye small, situated before the middle of the length of 

 the head. Teeth very smaU, dilated, aaotched at the apex, few in 

 number. Pectoral extending beyond the middle of the length of the 

 ventrals. The height of the body is rather more than one-fourth of 

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

 Dark brown, with two lighter cross bands between dorsal and anal 

 fins. 



Old Calabar. 



a. Type of the species. Presented by Dr. A. Giinther. 



III. Dorsal and anal Jim subequal ami moderate in length; moid obtuse; 

 cleft of the mouth terminal or directed upwards ; snout short*. 



10. Mormyrus cyprinoides. 



MormjTUS cyprinoides, L. Mus. Ad. Frid. p. 109, and Syst. Nat. i. 



p. 522 ; liiipp. Forts. Beschreib. Nil-Fische, taf. 2. fig. 4 ; Cuv. Sf 



Vol. xix. p. 265. 



labiatus, Geoff. Descr. £g. Puiss. i. p. 275, pi. 7 fig. 1. 



salahi^, Lacep. v. p. 621. 



elongatus, Riipp. I. c. p. 2, taf. 2. fig. 1 ; Cuv. ^ Val. xix. p. 269. 



abbreviatus, Cuv. ^ Val. xix. p. 270. 



MormjTops labiatus, Marcusen, Mormyr. p. 137. 



elongatus, Marcusen, Mormyr. p. 140. 



abbreviatus, Marcusen, Mormyr. p. 142. 



D. 26-28. A. 32-35. V. 6. L. lat. 85. Vert. 16-17/29-30. 



Snout obtuse, of moderate length, with the lower jaw prominent, and 

 with a very short, skinny flap at the chin. Eye rather small, situated 

 before the middle of the length of the head. Teeth minutd, pointed, 

 few in number. Pectoral extending beyond the root of the ventrals. 

 The height of the body is one-fourth or two-sevenths of the total 

 length (without caudal), the length of the head one-fifth or some- 

 what less than one-fifth. 



Nile ; "West Africa, 

 a, h, c-d, e-f. Adult, half-grown, and young. Lower NUe. 

 g. Adult male. Egypt. From Dr. EiippeU's Collection. — One of 



the typical specimens of M. elongatus. 

 h. Half-grown. Chartoum. From Consul Petherick's Collection, 

 i, Tc. Adult and half-grown. West Africa. Purchased of Mr. Dalton. 



The proportions of the body, especially its depth, depend in a great 

 measure on the sex of the individual, and on the season, as in 



* To this section appears to belong a species from Dongola, which, at present, 

 is known from a bad figure only — Mormyrus pietv.ii, Heuglin in Sitzgsber. Akad. 

 Wiss. Wien, 1852, ix. taf. 60. fig 1 ; Petrocephalus pictus, Maroueen, 1. c. p. 153. 



