30 THE NAUTILUS. 



size. It is the best novelty in American shells found, I believe, for 

 some time. 



138. Poly, stenotrema (Fer.). Found a few on the slope of the 

 Chastat Mountains south of Mena. 



139c. Poly.hirsula uncifera (Pils.) n. var. In both the Chastat and 

 Rich Mts. at Mena. From its silvery, clean appearance and un- 

 usually prominent basal lip, 1 believed this to be a new variety, and 

 gathered all I could find. When one is out in the woods, by the 

 way, be cannot always tell what is what. 



141a. Poly, monodon fraterna (Say). Rocky Comfort on the 

 bank of a creek in company w i th friersoni and aliciae. 



141b. Poly, monodon aliciae (Pils.). Mt. Pleasant and Naples, 

 Texas, to Horatio and Ultima Thule, Ark. 



141d. Poly, monodon friersoni (Pils.). DeKalb, Texas ; Rocky 

 Comfort and Cove, Ark. 



141e. Poly, monodon imperforota (Pils.), n. var. Rocky Comfort, 

 Mena and Cove. Mr. Pilsbry has thrown a bomb into the monodon- 

 Leai camp, and I merely list these, leaving the description for the 

 article he promises the readers of the Nautilus. 



153. Bulimulus dealbatus (Say). DeKalb, Rocky Comfort, Gil- 

 ham, Mena. 



180. Slrobilops labyrinthica (Say). Cove, one specimen. 



184. Pupoides marginatus (Say) [Leucocheila fallax of authors]. 

 At Cove under rails in an abandoned field, and at Cerro Gordo un- 

 der logs ; plentiful in company with small red Poly, thyroides and 

 Bifidaria contracta. 



186. Bifidaria armifera (Say). DeKalb, Lanesport and Mena. 



187. Bifidaria contracta (Say). Cove. 



247. Omphalina friabilis (W. G. B.). DeKalb to Mena, most 

 plentiful at Rocky Comfort. 



263. Vitrea petrophila (Bid.). Mena. This is the first time this 

 species has been found west of the Mississippi. Three others were 

 also found in this catch that may turn out to be a variety of V> 

 wheatleyi (Bid.). 



270. Vitrea indentata (Say). From Morris' Ferry to Mena. 



285. Vitrea Simpsoni (Pils.). Morris' Ferry to Mena, both under 

 logs and in the rocks, active. 



278-lb. Conulus chersinns trochidus Reinh. Cerro Gordo, Hat- 

 ton's Gap and Chastat Mts., rocks and under logs, rare. 



