1902.] NATURAL SCIENCES OF PHILADELPHIA. 593 



September 16. 



Mr. Arthur Erwin Brown, Vice-President, in the Chair. 



Ten persons present. 



Papers under the following titles were presented for publication : 

 "On the Genus Phrynotettix Glover (Haldemanel la Auct.;," 

 by James A. G. Kehn. 



" Notes on an Ant," by Adele M. Fielde. 



Neiv Land Mollusca from Idaho.—Dn. Pilsbry spoke of land 

 mollusks collected in Idaho by the Rev. E. H. Ashmun, whose 

 work in former years has added so largely to our faunistic knowledo-e 

 of Arizona and New Mexico. Among other new and interesting 

 finds, a new species of the Zouitid genus Pristiloma was found the 

 easternmost of its kind. The following description was offered': 

 Pristiloma idahoense n. sp. 



Shell imperforate, depressed, the spire low conoid, yellowish 

 corneous, glossy, smooth except for faint growth-lines stronger 

 near the suture. AVhorls 6, very narrow and slowly increasino- 

 the last very obtusely angular at the periphery, very convex 

 beneath, only slightly impressed at the axis. Aperture Very nar- 

 rowly lunate, the peristome simple and thin, the columellar maro-in 

 thickened within, suddenly but minutely dilated at the axial ins'er- 

 tion. Alt. 2.1, diam. 3.4 mm. 



Steven's Ranch, Weiser Canon, Washington Co., Idaho tvnes 

 No. 82,353 Coll. A. N. S. Phila. ; also Price Valley, Weiser CaCon 

 m the same county, and Big Payette Lake, Boise Co., Idaho' 

 collected by Rev. E. H. Ashmun, 1901. 



-. oin ^^® ^^y *° ^P®^^®^ °^ Pristiloma published by the S])eaker in 

 1899 (Proc. A. N. S. Phila., p. 187), this species would group 

 with P. lansmgx and P. arctica. It differs from the latter in hav- 

 ing more and narrower whorls, a higher periphery, and a narrower 

 mouth. It differs from lamingi in the larger size, absence of any 

 lip-rib (in over 100 specimens examined), the less rounded per- 

 iphery, and the greater number of whorls. 



The death of William N. Lockington, a member, was announced. 



