20 CTPRINIDJ:. 



15. Catostomus carpio. 

 Catostomus carpio, Cuv. ^ Val. xvii. p. 4o7, pi. 517. 

 D. (17-)18. A. 8-9. L.lat. 43-45. L. transv. 6|/8^. Vert. 27/14. 



The height of the body is contained three times and a quarter or 

 three times and one-third in the total length (without caudal), the 

 length of the head four times or foiu* times and one-third. Lower 

 lip much thicker than the upper, slightly bilobate, both corrugated. 

 Eye small, in the middle of the length of the head ; suborbitals 

 narrow. There are four and a half longitudinal series of scales 

 between the lateral line and the root of the ventral fin. Scales on 

 the fore part of the trunk smaller than those on the tail. Upper 

 margin of the dorsal fin convex ; dorsal fin sometimes conspicuously 

 elevated, the four or five anterior branched rays being as long as 

 the base of the fin ; its origin is nearer to the end of the snout than 

 to the root of the caudal. 



Ail- -bladder with three divisions. Pharyngeal teeth as in the 

 other species. 



Lakes Ontario and Erie, Canada. 



a. Adult. North America. Purchased of i[r. Brandt. 



b-c, cl-f. Adult. Montreal. Purchased of Mr. "Wright. 



g. Fine specimen. Lake Erie. Purchased of Mr. Wright. 



h. Adult male : skeleton. Montreal. Purchased of Mr. Wright. 



16. Catostomus macrochilus. 



Catostomus macrochilus, Gii-ard, in Proc. Ac. Nut. Sc. Philad. 18-j6, 

 p. 175 ; or in V. S. Pac. JR. R. Exped. Fish. p. 225. 



D. 17. A. 9. 



Scales of moderate size. " The head constitutes the fifth of the 

 total length ; the horizontal diameter of the eye is contained nearly 

 six times in the length of the side of the head. The head itself is 

 subquadi'angularly pyramidal, truncated anteriorly, "with the iipper 

 edge of the snout projecting. The anterior margin of the dorsal is 

 a little nearer the end of the snont than the insertion of the caudal 

 fin. Its upper margin is concave. The anal is weU developed ; for 

 its tip extends beyond the base of the caudal. The ventrals are 

 inserted opposite the middle of the dorsal. The pectorals are large 

 and long." (Gtrard.) 



Astoria, Oregon. 



2. MOXOSTOMA*. 



Catostomus, sp., Lecxeiir, Cur. Sj- Tal. 



Moxostoma, {Riifincsqite) Aqassiz, in Amer. Journ. Sc. Arts, xix. 

 1855, p. 84. 



Scales of moderate size ; lateral line none. Fins, mouth, gills, 



* 1. Cyprinus sucetta, Lacep. v. pp. 606, 610; Catostomus sueetta, Lesuev.r, 

 I. c. p. 109 ; Catostomus suceti, C. <^- V. xvii. p. 466 ; Moxostoma sucetta, 

 Agassiz. — Southern States of North America. 

 2. Catostomus (Moxostoma) anisurus, Rafinesque ^- Agaisiz. — United States. 



