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410 THE CHICAGO ACADEMY OF SCIENCES. 
basal, a little longer than wide, but nearly circular, the inner 
margin a trifle straightened above; peristome continuous, in 
contact with the preceding whorl for an extremely short dis- 
tance above. Operculum Amnicoloid.”’ 
Alt.5, diam.2; length of aperture, 14%; width 1% mm. 
Oe LAG t AU WURDE LAs oe «. > Pilepiye 
Animal: Not examined. 
Radula: Amnicoloid. (Pilsbry.) 
Distribution: ‘‘Lake Michigan at High Island Harbor, 
Beaver Island, at 19 meters depth; Reed’s Lake, Grand Rap- 
ids, Mich.; River Rogue, Wayne Co., Mich.; the types from the 
first locality mentioned.” (Pilsbry.)’ Joliet, Ill. (J. H. Fer- 
riss. 
A distribution: Pleistocene. 
Habitat: Similar to other Amnicola. 
Remarks: This, one of the smallest of Amnicolze, has re- 
cently been found at Joliet by Mr. J. H. Ferriss. It will be 
easily known by its small size and peculiar shape. 
~ 
