THE CHICAGO ACADEMY OF SCIENCES. 



Greenland. 

 Northern shore of Baal's River, near Nepiset S<>und (Moller; Mdrch). 



Geological Distribution : Unknown. 



Ecology: Artificial tank in Greenland (Moller). 



Remarks : Pingelii differs from vahlii in its smaller sice, more 

 cylindrical shell, shorter and blunter spire and in its more feebly de- 

 veloped inner lip; the aperture is generally more ovate and the um- 

 bilical chink is larger. The variety seems to occupy about the same 

 range as vahlii and frequently occurs associated with it. Its short 

 stumpy spire, which is almost always decollated, will invariably dis- 

 tinguish it from vahlii. Its dark color is also a distinguishing feature. 



It resembles some forms of arctica Lea from which it may be 

 known by the absence of the columellar plait and also by its thinner 

 shell. The specimens referred to arctica by Whiteaves (Nautilus 

 XIX, p. 3), upon examination seem to be referable rather to pingelii. 

 They certainly do not agree with the shells brought from Hudson Bay 

 by Dexter, and they do agree with the specimens referred to pingelii, 

 as well as with the published descriptions and figures. 



Galba neopalustris, Sp. nov. Plate XXXIX, figure 28. 



Shell : Small, thin, ovate-conic ; color reddish brown ; sculpture 

 of fine growth lines crossed by distinct spiral lines ; last whorl some- 

 what malleated and encircled by a number of heavy, equidistant spiral 

 ridges ; whorls 5-6 (the earlier ones usually eroded ) rounded, roundly 

 shouldered, the body whorl quite obese ; the upper part of the whorls 

 is somewhat flatly sloping: spire acutely conic, usually eroded to the 

 third whorl, longer than the aperture ; sutures well impressed ; aper- 

 ture roundly ovate ; peristome thin, slightly thickened within ; inner lip 

 very narrow, the upper part, together with the parietal callus folded 

 tightly over the parietal wall ; there is a very minute umbilical chink ; 

 axis twisted. 



Length. Breadth. Aperture length. Breadth. 



13.00 7.00 7.00 4.00 milL 



Type : Chicago Academy of Sciences, one specimen, Xo. 24547 ; 

 cotpyes, coll. Bryant Walker, Xo. 8250. 



Type Locality: Orange, Orange Co.. Virginia. 



Animal, Taw, Radula and Genitalia : Unknown. 



Range : (Figure 42;. Virginia in the drainage of the Rappahan- 

 nock River. A species of the Carolinian region and of the Upper 

 Austral (Carolinian division) life zone. 



RECORDS. 



Virginia: Orange, Orange Co. ( Walker). 



Geological Range: Unknown. 



