218 MOHMYRID-a;. 



9. Mormyras petersii. 

 Mormyrus petersii, Gilnth. Wicgm. Arch. 18G2, p. G4, and Proc. Zool. 

 Soc. 18G4, p. 22, pi. 2. tig-. 2. 



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

 Snout subconical, somewhat decurved, with 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 small, dilated, notched 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. Dmsal and anal fins subequal and moderate in length; snout obtuse; 

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



10. Morin3rrus cyprinoides. 



MomijTus cj'prinoides, L. Mus. Ad. Frid. p. 109, and Syst. Nat. i. 

 p. 522 ; Riipp. Forts. Beschreib. Nil-Fische, taf. 2. fig. 4 ; Cuv. 8f 

 Val. xix. p. 265. 



labiatus, Geoff. Descr. Eg. Poiss. i. p. 275, pi. 7. fig. 1. 



salahi^, Lacep. v. p. 621. 



elongatus, liiipp. I. c. p. 2, taf. 2. fig. 1 ; Cuv. Hf Val. xix. p. 269. 



abbreviatus, Cue. i^- Val. xix. -p. 270. 



Mormyrops labiatus, Marcusen, Mormyr. p. 137. 



elongatus, Marcusen, Mortnyr. 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 minute, 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-cl, e-f. Adult, half-grown, and young. Lower Nile. 



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



the typical specimens of M. elonr/atus. 

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

 i, k. Adult and half-grown. West Africa. Pm-chased 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 kuowni from a bad figure only — Mormyrus 2nctus, Heuglin in Sitzgsber. Akad. 

 Wiss. Wien, 1852, ix. taf. 60. fig. 1 ; Petroccphalus pictus, Marcusen, 1. c. p. 153. 



