GASTROPODA— -PUP ADM. 



821 



696. P. arenula White. (Fig. 1209, a, b.) Eocenic. 

 Small, short and thick, with much contracted aperture. 

 Green River beds of southern Wyoming. 



CCXVI. Anthracopupa Whitfield. 

 Minute pupiform shells with few volutions, imperforate axis 

 and nearly vertical aperture; peristome thickened, with inner lip 

 forming a nearly transverse callus, bearing teeth ; inner margin of 

 lip also with teeth and a nearly circular notch. Carbonic. 



697. A. ohioensis Whitfield. (Fig. 1208, a-c.) Carbonic. 



Fig. 1208. a-c, Anthrocopupa ohioensis ; d, e, Dendropupa vetusta ; f, g, D. vermil- 

 ionensis ; h, i } Archceozonites priscus. (All after White; 3d Ann. U. S. G. S. ) 



Small, with 3 or 4 strongly embracing whorls, reflected thick- 

 ened lip, bearing a tooth antero-laterally, and inner lip callous, also 

 bearing a single tooth. Surface with fine growth lines; length 

 about 3.3 mm. 



Upper Coal measures of Ohio. 



CCXVIL Dendropupa Dawson. 



Like Pupa, but with aperture toothless. Carbonic ( fresh-water) . 

 698. D. vetusta Dawson. (Fig. 1208, d, e.) Carbonic. 



Long, subcylindrical, of numerous, rather irregular whorls, 

 slightly convex, with moderately impressed suture; aperture pro- 

 duced with reflexed lower lip. 



Coal measures of Nova Scotia (Joggins beds). 



