700 REPORT OF COMMISSIONER OF FISH AND FISHERIES, 



Clepsine parasitica Diesing. (p. 678.) 



Judging from the extreme uortheru and western range of this species, 

 it must occur iu Lake Superior. 



Clepsine papillifera Verrill. (p. 683.) 

 Collected at Bad Eiver by Mr. J. W. Milner. 



ICHTnYOBDELLA PUNCTATA Yerrill. (p. 687.) 



Dredged iu 6 to 8 fathoms among the Slate Islands. 



TURBELLARIA. 

 Procotyla fluviatilis Leidy. 



Dendrococlum siqierlum Leidy, Proceediugs Acadenij' Nat. Sci. Philadelphia, vol. 

 V, 1851, p. 288, (non Girard.) 



Procotyla flmiailUs Leidy, MSS. ; Stimpson, Proceediugs Academy.Nat. Sci. Phila- 

 delphia, vol. ix, 1857, 1). 23; Diesiug, Revision der Turbellarieu, Sitzungsbe- 

 richte der matheiu.-natiu'\Yissensch. Classe der kais. Acad, der Wissensch. zu 

 Wien, 1861, p. 517 ; Smith and Verrill, American Journal of Science, 3d series, 

 vol. ii, p. 452, 1871 ; and Preliminary Report on Dredging in Lake Superior, p. 

 1025, 1871. 



Numerous specimens of this species were dredged iu 8 to 13 fathoms 

 among Clado])hora on the south side of Saint Iguace Island. When 

 living, the}' were dirty-white, mottled with brown. 



It is not uncommon near Xew Haven, Conn., and in other parts of 

 New England. 



MOLLUSCA. 



The following list of the moUusks of Lake Superior is largely a com- 

 pilation from the publications of Say, Haldeman, Gould, Lea, Prime, 

 and Binney, and no sort of revision of the species has been attempted. 

 I have, however, iu all cases given the authority for the insertion of the 

 species when I liave not observed them myself. 



GASTROPODA. 



For the identification of several of the following species collected by 

 myself I am indebted to Charles M. Wheatley, esq., of Phosnixville, Pa. 

 For convenience of identification I have added, under most of the spe- 

 cies, a reference to Parts II and III of Mr. Binney's Land and Fresh- 

 Water Shells of North America, published iu 1865 in the Smithsonian 

 IMiscellaneous Collections. 



Valvata tkicarinata Say. 



Binney, op. cit., part iii, p. 9. 



From the stomach of white-fish taken atSanlt Sainte Marie and the 

 stomach of sturgeon taken at Sand Island. 



