64 GASTROCOPTA, NORTH AMERICA, WEST INDIES. 



the rupicola territory. In some places, as at Galveston, G. 

 rupicola, procera and hordeacella occur together in the same 

 colony. 



I have seen G. procera from Cecil Co., Maryland, near the 

 Pennsylvania line, and it may be expected to occur in Penn- 

 sylvania, in the lower Susquehanna valley. There are records 

 of "rupicola" from New England (Binney) and New York, 

 which if not due to mixture of specimens or labels, as one 

 may suspect, should pertain rather to procera. G. procera is 

 found in the southern parts of all the states north of the Ohio 

 River, in Missouri and Kansas (Shawnee Co.), and west as 

 far as Perkins, Payne Co., Oklahoma (D. K. Greger) ; also 

 Texas, in Lee Co., where the form seems to me intermediate 

 between procera and duplicata. In the west it may narrowly 

 overlap parts of the areas of the subspecies duplicata and 

 mcclungi, and in some New-Mexican lots, from the debris of 

 the Rio Grande and Mhnbres rivers, it is rather difficult to 

 decide whether one has procera or mcclungi. 



Dr. Sterki has reported G. procera from Iowa and from 

 Winona, Minnesota (Nautilus, iv, 140), places further north 

 than any from which I have seen specimens; also Cincinnati, 

 Columbus and Hamilton, Ohio (Proc. Ohio Acad. Sci., iv, 

 378). Baker recorded it from Joliet, Illinois (Moll. Chicago 

 Area, pp. 20, 232). G. procera has been reported from Trini- 

 dad, Colorado (Univ. of Colo. Studies, iv, 171), but the speci- 

 mens are G. p. mcclungi. 



Pupa minuta was wrongly credited to Say by Pfeiffer, who 

 gave the description translated below. He quoted Pupa gib- 

 bosa Say as a synonym, but the latter name was used only by 

 Kiister, who figured it. These figures support the opinion of 

 Binney that the shell was merely procera, rather a young 

 one, apparently. 



P. minuta Say. Shell scarcely rimate, cylindric, glossy, 

 pellucid, corneous, spire with the apex obtuse; aperture sub- 

 semicircular, f our- toothed : teeth subequal, one parietal, one 

 columellar, two palatal; peristome expanded, somewhat 

 lipped, the margins separated, right margin arcuate above. 

 Length 2%, diam. iy aperture % mm. in oblique length. 



