GASTROCOPTA, NORTH AMERICA, WEST INDIES. 63 



conspicuous projection of the outline on the left side, and its 

 inner end curves slightly to the right. The columellar lamella 

 is stout, transverse, nearly a half whorl long; below it there 

 is a low tubercle (pi. 12, fig. 2; variable in prominence, and 

 often not visible in a face view). The upper palatal plica is 

 short, situated exactly opposite the spur of the parietal, and 

 is rather deep within. Lower palatal plica is much longer, 

 more deeply placed, its inner end reaching a dorsal position. 

 The basal plica is short, about as deep within as the upper 

 palatal. The peristome is thickened within by a strong, cin- 

 namon callous ridge, in front of the lip-teeth, and excavated 

 near the upper insertion. 



Length 2.5, diam. 1.1 mm. 



Length 2.3, diam. 1 mm. 



Eastern United States: Maryland to South Carolina, west 

 to Shawnee Co., Kansas, and Payne Co., Oklahoma; south to 

 Alabama and eastern Texas. Type locality, Baltimore, Mary- 

 land. 



Pupa procera GOULD, Boston Journal of Nat. Hist., iii, 

 1840, p. 401, pi. 3, f. 12 (bad) ; iv, 1843, p. 359, pi. 16, f. 12. 

 STERKI, Nautilus, iv, 1891, p. 140 ; vi, 1892, p. l.Bifidaria 

 procera Gld., PILSBRY and VANATTA, Proc. A. N. S. Phila., 

 1900, p. 594, pi. 22, f. 6, 7. WALKER, Occ. Pap. Mus. Zool. 

 Univ. Mich., no. 15, 1915, pp. 2-10. Pupa carinata GOULD, 

 Boston Journal N. H.., iv, no. 1, 1842, cover ; t . c., no. 3, 1843, 

 p. 359. Pupa gibbosa Say, KUESTER, Syst. Conchyl. Cab., 

 Pupa, p. 123, pi. 16, figs. 13-16 (in Nordamerika und Mex- 

 ico). Not of Say. Pupa minuta Say, PFEIFFER, Symbolae ad 

 Hist. Hel., ii, 1842, p. 54; Monographia Hel. Viv., ii, p. 356. 

 Not of Say. Pupa rupicola Say, W. G. BINNEY, Land and 

 Fresh-Water Shells of N. A., i, 1869, p. 243, f. 423, 424; Man. 

 Amer. Land Shells, 1885, p. 328. Not of Say. 



G. procera differs from G. rupicola by its dark color, tinted 

 or dark-colored lip, and more cylindric shape. Both have the 

 lip heavily calloused within, but in continental G. rupicola 

 the callous is always white, and the shell very pale. G. rupi- 

 cola is an Austroriparian species, nowhere extending as far 

 north as G. procera, but the latter extends south into part of 



