88 Annals of the Carnegie Museum. 



end of caudal peduncle 113 mm.; head 4.5; depth 3.8; D. 1 1 ; scales 

 20-82-12; teeth 34. 



2. Leporinus ecuadorensis sp. no v. 



131 16 a, I. U. M. Type, 325 mm. Rio Barranca Alta near Naran- 



jito, Ecuador, Arthur Henn. 

 5428 a-b, C. M.; 131 16, I. U. M. Six paratypes. Largest 187 mm. 



Rio Baranca Alta, Naranjito. Henn. 



5426 a-i, C. M.; 13113. I. U, M. Nineteen, 128-264 ^"^- Vinces. 

 Henn. 



5427 a-b, C. M.; 131 14, I. U. M. Several. Guayaquil. Henn. 

 131 15, I. U. M., several. Colimes. Henn. 



This species differs from typical specimens of L. friderici from British 

 Guiana, chiefly (i) in having the dorsal set farther back, i. e., equi- 

 distant from snout and a point midway between the adipose and 

 caudal; (2) the anal set somewhat farther forward and very seldom 

 reaching the caudal; and (3) the presence of three persistent lateral 

 spots. L. niuyscorum has the dorsal as in L. friderici, but the sharp 

 caudal and the anal placed as in this species. L. muyscorum and the 

 present form should probably be regarded as subspecies of L. friderici, 



( 3.8 3.9 4 4.1 4.2 \ 

 Head •^.8-4.2 { ^^ — , — , — , — , — I denominator representing 

 \ 2 I 20 I I / 



the number of individuals having the given character; depth 3.3-3.8 



3-3 34 3-5 3-6 3-8\ n t. t. / ^^ 13 \ , _ . ^ ^ . 

 — , — , — , — , — ; D. 12-13 — 1 — ; A. 10, in twenty six 

 4 4 12 4 2 / \25 I / 



, / 39 40 41 \ . , 



specimens; scales 5-39 to 41-4 or 5 I — , — , — : eye 1.5-2 in the 



\ I 20 5 / 



snout, 4.5-5.5 in head, 2-3 in interorbital; four teeth in each side of 



each jaw. 



Origin of dorsal equidistant from the tip of the snout and a point 



beyond the adipose or generally midway between the adipose and the 



base of the upper caudal fulcrum. The height of the third or longest 



dorsal ray is equal to the head less one-half of the opercle. Caudal 



sharp, deeply forked, not obliquely truncate or lobate, as in L. friderici, 



the upper lobe about half an orbital diameter longer than the lower. 



Anal but slightly emarginate, the distance from its origin to the base 



of the caudal equal to the head, or the head plus an orbital diameter. 



The height of the third or longest ray^equals the head minus the snout; 



only very rarely reaching the lower caudal fulcrum as is commonly 



