THE NAUTILUS. 



VOL. XXVII. FEBRUARY, 1914. No. 1O 



CAMPS IN THE CATALINAS AND WHITE MOUNTAINS OF ARIZONA, 

 WITH DESCRIPTION OF A NEW AMERICAN LAND SHELL. 



BT JAS. H. FERRISS. 



On my last vacation last summer I found a new land snail, another 

 wooly one, on a rock slide of the San Francisco river, about ten miles 

 above Clifton, Graham Co., Arizona. It belongs in a group with 

 Ashmunella wnlkeri Ferriss and A. lepiderma P. & F. I have held 

 this out to name after Dr. H. A. Pilsbry who has been with me on 

 so many of these vacation excursions and ought to have been with 

 me on this. Dr. Pilsbry has taken the laboring oar on the catch 

 of this expedition otherwise, and together with the findings of 

 the catch of Pilsbry, Daniels and Ferriss in southern Arizona for 

 1910, the report will be published in the Proceedings of the Academy 

 of Natural Sciences, Philadelphia. 



ASHMUNELLA PILSBRYANA n. sp. 



Shell lens-shaped, acutely carinated ; umbilicus straight and nar- 

 row, 1.6 min. wide, enlarging on the last turn to 3 mm. Thin, pale, 

 corneous brown. Surface sculptured with irregular growth striae, 

 closely papillose, not striated spirally : covered with a thin dull epi- 

 dermis, with short, light colored, cuticular scales upon the papillte in 

 young, unrubbed specimens. 5^ whorls, rounded, deeply sutured, last 

 whorl impressed above the periphery ; lower side of last whorl three 

 times as wide as the upper surface ; deeply guttered behind the lip. 



