272 NORTH AMERICAN FAUNA. [No. 7. 



feet above the springs. It is nearly white, with the single band quite 

 pale. This gives another locality to the above species, first found in 

 the Grand Canon of the Colorado, opposite the Kaibab plateau at an 

 elevation of 3,500 feet, by Dr. C. Hart Merriam in 1890. The Resting 

 Springs locality is in the southeastern part of Inyo County. 



Helix (Arionta) mormonum Pfr. 



Mineral King, Tulare Count/, Calif. (Mus. No. 123580), September 10, 1891, Vernon 

 Bailey. 



The single fresh specimen, hardly mature, was found among rocks 

 about 1,000 feet below the timber line, above the Empire miue. 



Helix (Arionta) tudiculata W. G. B. 



Three Rivers, Tulare County, Calif. (Mus. No. 123581), T. S. Palmer, July 27, 1891. 



Three specimens, one a fine living example, found at a point 850 feet 

 above the sea. These illustrate the trifling valne that should be given 

 to the umbilical character in many of the land shells. The specimens 

 from which the author wrote his description were imperforate, while the 

 best example of Palmer's has an entirely open umbilicus, the same as 

 many other individuals that I have observed before. A large series 

 will be seen to run from one extreme to the other, the variability of 

 this feature being the constant factor, paradoxical as it may appear. 



Helix (Arionta) cypreophila Newc. 



?=R. tudiculata W. G. B., variety. 

 Three Rivers, Tulare County, Calif. (Mus. No. 123582), July 27, 1891. T. S. Palmer. 



Two examples, probably whole and fresh if not living at the time 

 they were collected, were detected by Mr. Palmer in the above region, 

 at an elevation of 850 feet. Dr. Newcomb's specimens were found at 

 or near Copperopolis, in Calaveras County, Calif. Binney regards it 

 as a variety of tudiculata; it may be so. It is, however, so rare that I 

 have never seen specimens enough to enable me to come to a con- 

 clusion. Mr. Palmer's examples, though imperfect, conspicuously 

 exhibit the characters that separate it from tudiculata. Perhaps a 

 large series of specimens might satisfactorily connect the two. The 

 dentition and genitalia have been investigated and were found by Mr. 

 Binney to be the same as in tudiculata. Judging by the Palmer shell 

 it is, to say the least, a decidedly well-marked variety. 



Helix (Arionta) arrosa Gould. 



Boulder Creek, Santa Cruz County, Calif. (Mus. No. 123583), Vernon Bailey, 

 October, 1891. 



A single examine, which may be regarded either as a dwarfed arrosa 

 or an elevated form of exarata; the latter is probably a geographical 

 aspect of arrosa; Hemphill catalogues exarata as a variety of arrosa. 



Helix (Praticola) griseola Pfr. 



Hidalgo, Tamaulipas (Mus. No. 123584), and Monterey, Mexico (Mus. No. 123908), 



February, 1891; also Brownsville, Tex. (Mus. No. 123585), William Lloyd, 



July, 1891. 



The three Texas shells are fine, broadly banded examples and dark 

 colored ; the others of the general or usual aspect, 



