1. C.VTOSTOMT73. 19 



a. Fine siDecimeu. Lake Erie. Purchased of Mr. Wright. 



b-c. Young : skins. Erie Canal. Erom ]\Ir. l/arnoH's Collection. 



d. Very young. United States. From Mr. Parneirs Collection. 



e. A.dult : stuffed. Pine Island Lake. Presented by Sir J. llich- 



ardson. — Type of G. sueurii. 



f. Nineteen inches long : stuffed. Albany River. Presented by Sir 



J. Richardson. 

 f/-h. Adult : stuffed. North America. 



13. Catostomus congestus. 



Catostomus congestus, Baird tSr Girard, I'roc. Ac. Kat, Sc. PhUad. 



18o4, p. 27. 

 Ptychostonuis congestus, Girard, in U. St. ^- Me.v. Bound, Survey, 



IcUhyol. p. 30, pi. 21. figs. 5-8. 



D. 13-14. A. 9. L. lat. 46. 



The height of the body is contained thrice and fourrfifths in the 

 total length (without caud;il), the length of the head foxu' times 

 and a half. Lower lip much thicker than the upper. Eye in the 

 middle of the length of the head. Scales on the fore part of the trunk 

 equal in size to those on the tail. {G\r.) 



Eio Salado, Texas. 



14. Catostomus fasciatus. 



Catostomus fasciatus, (Lcsiwur) Cuv. tS'- J'«/. xvii. p. 449; Kirtland, 



Bost. Journ. Nat. Ifi.tt. v. p. 271, pi. 20. tig. 3. 

 Ptychostomus (Catostomus) melauops, (^Rajinesque) Agassiz, Amer. 



Journ. Sc. ^- Arts, ix. 1855, p. 89. 



D. 14-15. A. 8-9. L. lat. 45-48. L. transv. 6^/8. 



The height of the body is contained four times in the total length 

 (without caudal), the length of the head four times and one- 

 third. Lower lip thicker than the upper, not bilobed. Eye small, 

 in the middle of the length of the head ; suborbitals broad, as broad 

 as, or rather broader than, the Heshy portion of the cheek below. 

 •There are five longitudinal series of scales between the lateral line 

 and the root of the ventral fin. Scales on the fore part of the trunk 

 equal in size to those of the tail. Each scale with a very distinct 

 brown spot at the base, the spots forming a continuous streak along 

 each series of scales. 



Mississippi, Ohio. 



a-h. Skins, 10 and 7 inches long. Ohio Canal. From Dr. Parnell's 

 Collection. 



Pti/chostomus hai/dcni, Girard, in Proc. Ac. Nat. Sc. Philad. 1856, 

 p. 172, or in U. St^ Pac. R. R. Exped. Fish. p. 220, pi. 49. figs. 1-4, 

 is perhaps identical with this species ; however, this author does not 

 mention the form of the suborbital bones. 



