540 PROCEEDINGS OF THE ACADEMY OF [DeC, 



a large form of P. jacksoni which he took on the bkiffs of the Arkansas 

 River at Van Buren, Crawford Co., and in Sebastian Co., Ark., but we 

 have not seen his specimens. 



At Wyandotte P. j. sirnpsoni alone is found on the bluff facing the 

 river, while the small typical jacksoni occurs in the dry stony woodland 

 at the summit of the bluff. In no case were the two forms found in 

 company. 



In 1900 Mr. Ferriss took a specimen of this variety at Mena, Polk Co., 

 Ark. (cf. Nautilus, XIV, p. 28, No. 72). 



Section Stenotrema Raf. 



Five species of this group are now known from the Ozark region: 

 P. stenotrema, P. labrosa, P. hlandiana, P. uncifera and several sub- 

 species of P. fraterna. The common Eastern P. hirsuta is not known 

 to enter the Ozarks. Mr. Sampson has recorded it from Sedalia, Mo., 

 a place well out of the Ozark fauna. P. jraterna, P. fraterna friersoni 

 .and P. f. alicicB are the only Stenotremes known to reach so far south- 

 west as Texas. 

 Polygyra stenotrema (' F^r.' Pfr.). 



Not a common snail in the Ozark region, so far as my experience 

 goes. It does not appear in Mr. Singley's Texas list, and I can find 

 no Missouri record, though from its presence at Hardy and Wyandotte 

 it may reasonably be expected over the State lines northward in both 

 Missouri and Kansas, as well as in the still unknown eastern part of 

 Arkansas. The following localities are represented by specimens 

 before us: 



Arkansas: Hardy, Sharp Co. (Ferriss) ; Mabelvale, Pulaski Co. 

 (C. W. Johnson); Petit Jean Mts., south of Hartford, Sebastian Co., 

 one dead shell (Pilsbry and Ferriss); spur of the Chastat Mts., about 6 

 miles south of Mena, Polk Co. (Ferriss) ; to which Mr. Sampson adds the 

 records Clark, Garland and Independence counties. 



Indian Territory: Wyandotte, Wyandotte Nation (Pilsbry and 

 Ferriss); Fort Gibson, in the Cherokee Nation (E. W. Hubbard). It 

 was also taken at the latter place by C. T. Simpson in 1888. 



Polygyra labrosa (Bland). 



Proc. A. N. S. Phila., 1903, p. 202, pi. 9, figs. 4-6. 



Helix labrosa Bid., Ann. Lye. N. H. of N. Y., VII, 1862, p. 107, pi. 4, fig. 19. 



In 1903 we took this species at eight places in Missouri, Arkansas and 

 Indian Territory. It is quite abundant in most places, and varies but 

 slightly. The recorded range of P. labrosa east of the Mississippi in 

 Tennessee and Alabama (see Bland) rests solely upon data and speci- 



