130 Bryant Walker 



Genus TULOTOMA Haldeman, 1840. 



TuivOTOMAANGUIvATA (Lea). 



The opinion of Lewis (71, p. 24) and Wethefby (164, p. 207) that this 

 is specifically distinct from magnifica Con. is no doubt correct. 



TuivOTOMA coosAENSis (Lea). 



This species described as a Paludina and referred to Vivipara by Binney 

 and to Lioplax by Tryon (132, p. 36) is a Tulotoma as stated by Wetherby 

 (164, p. 212). 



.Family VALVATID^. 

 Genus VALVATA O. F. Miiller, 1774. 



Valvata bicarinata Lea. 



Is a valid species. See Walker, 146, p. 124 and 147, p. 29. 



Vai^vata bicarinata connectans Walker. 



Valvata bicarinata connectans iWalker, Naut., XX, 1906, p. 30. 

 Type locality: Lake Michigan, New Buffalo, Mich. 



Vai^vata bicarinata NORMAI.1S Walker. 



Valvata bicarinata normalis Walker, Naut., XV, 1902, p. 125, fig. 5. 



Type locality: Not specified. 



Habitat: Muscatine, la. and Utica, Ills. 



Valvata bicarinata plrdeprlssa Walker. 



Valvata bicarinata perdepressa Walker, Naut., XX, 1906, p. 30, pi. I, figs. 



15-16. 

 Type locality : Lake Alichigan, Michigan City, Ind. 



Valvata calli Hannibal, Naut., XXIII, 1910, p. 107. 



Type locality: Marl-deposit, Upper Lahontan Quaternary, Summer Lake, 

 Or. 



Valvata humlralis californica Pils. 



Valvata hiimeralis calif ornica Pilsbry, Naut., XXII, 1908, p. 82. 

 Type locality : Bear Lake, San Bernardino Co., Cal. 



