THE NAUTILUS. 121 



Lyrnncea obrussa modicella Say. Thief River Falls. 



Lyimiaa sterkii Baker. Tliief River Falls. 



Lymneen coperata Say. Thief River Falls, Anita. 



Lymncea palustris Miiller. Thief River Falls, Cannon Lake, 

 Halrna, Anita. 



Pbinorbis bicarinntus Say. Lake Harriett, Cannon Lake. 



Planorbis trivolvis Say. Thief River Falls, Cannon Lake, Hal ma, 

 Lake Harriett. 



Plunorbis campanulatus Say. Thief River Falls, White Earth 

 Lake, Cannon Lake, Lake Harriett. 



Planorbis Itirsulus GUI. Cannon Lake. 



Plunorbis parvus Say. Thief River Falls, Anita. 



Segmentina armiyera Say. Thief River Falls. 



TWO NEW VARIETIES OF CYPRJEA FROM N. E. QUEENSLAND. 



BY II. B. PRESTON. 



Among a number of Cypraea from N. E. Queensland recently 

 received there occur two varieties, one of (7. xcmthodon Gray and 

 one of C. miliaris GmeL, which, though undoubtedly belonging to 

 these species, possess such marked varietal characters as to merit 

 notice. I therefore venture to describe them, as follows: 



Cyprcea xanthodon Gray, var. carnicolor, n. var. 



Dorsal surface flesh-colored without bands, indistinctly freckled 

 with pale rusty-red; base white; posterior and median columellar 

 denticles red, anterior columellar denticles white; denticles on lip 

 pure white throughout; thinner and mor pirit'orm than the type; 

 the posterior extremity of the outer lip is more produced, while that 

 of the columellar lip is less so than in the typical form; moreover, 

 there is no dark blotch on the columellar anterior extremity of the 

 dorsal surface. 



Alt. 24, diam. maj. 14 mm. 



Hab. : N. E. Queensland. 



The above has all the appearance of a deep-water shell. 



Cyprceri miliaris GmeL, var. nit-ea, n. var. 



Differing from the typical form in having the dorsal surface 

 grayish-white, gradually shading to pure white towards the base, 



