1868.] DR. A. GlmXHER ON NEW AMERICAN FISHES. 2-43 



narrow adipose membrane in front and behind. Origin of the dorsal 

 fin equidistant between the end of the snout and the adipose fin, 

 considerably in advance of the ventrals. Pectoral terminating at a 

 considerable distance from the ventral, ventral terminating close to 

 the vent. Abdomen rounded before and behind the ventrals. Scales 

 with their entire margin conspicuously serrated. Coloration uni- 

 form. 



Two examples were collected by Mr. Bartlett in the Huallaga, the 

 longest being 5| inches long. 



CURIMATUS ASPER. (Fig. 8, p. 242.) 



This species differs from C. cijprinoides, C. essequibensis, and C. 

 schotnbwffkii in having the scales strongly serrated, from 0. ruti- 

 loides in the form of the snout, and from C. ciliatus in the form of 

 the body. 



D. if. A. 12-13. V. 9-10. L. lat. 51. L. transv. i'^l. 



9 



The height of the body is contained twice and two-thirds or 

 thrice in the total length (without caudal), the length of the head 

 thrice and one-half. Upper profile slightly concave above the 

 occiput. Snout as long as the diameter of the eye, which is a 

 little more than one-half of the width of the interorbital space. 

 Snout somewhat projecting beyond the mouth. The second sub- 

 orbital bone is twice and one-half as long as deep. Eye with an 

 anterior and posterior adipose membrane. Origin of the dorsal fin 

 nearer to the end of the snout than to the root of the caudal, in ad- 

 vance of the ventrals. Pectoral fin extending beyond the base of 

 the ventrals, ventral fins to, or nearly to, the vent. Abdomen flat 

 before the ventrals, compressed behind them. Scales with their 

 entire margin conspicuously serrated. Coloration uniform. 



Four examples were collected by INIr. Bartlett on the Huallaga 

 and at Xeberos. The largest is 7 inches long. 



CURIMATUS DOBULA. 



Allied to C. troschelii. 



D. 12. A. 10. L. lat. 43. L. transv. 6/7. 



The height of the body is contained thrice and four-fifths in the 

 total length (without caudal), the length of the head four times. 

 Upper profile slightly convex on the nape. Abdomen rounded in 

 front and behind the ventrals. Snout rather shorter than the eye, 

 the diameter of which is contained thrice and one-third in the length 

 of the head, and less than the width of the interorbital space. Orbit 

 with an adipose eyelid in front and behind. Caudal fin deeply 

 forked, at least as long as the head. The origin of the dorsal fin is 

 nearly midway between the end of the snout and the adipose fin, 

 corresponding to the tenth scale of the lateral line. The pectoral 

 fin terminates at some distance from the ventral ; the ventral fin 

 does not reach to the vent. Scales with a few obtuse denticula- 

 tions. Body silvery ; dorsal fin with an indistinct oblique blackish 

 band ascending forwards. 



