1917.] NATURAL SCIENCES OF PHILADELPHIA. 75 



at Utah Lake, but says he found the latter aUve at only one locality 

 in Utah, namely, near Salt Lake City. IngersolP^ reports Fluminicola 

 fusca (Hald.) from Utah Lake, placing it in the family Amnicolidse 

 and on the same page repeated the same record under the name 

 Leptoxis fusca in the family Melaniidse. His LHah Lake record of 

 Lymn(ra catascopium Say cannot be accepted. Pilsbry^^ records 

 Paludestrina longinqua (Gld.) from Utah Lake; Fluminicola fusca 

 (Hald.) from Utah Lake, Bear Lake and Malad River, and Amnicola 

 limosa (Say) from Utah Lake and Spring Lake. 



Sta. 127, shore of Utah Lake and adjacent slough, two miles south 

 of Lehi, Utah. Very few live moUusks were found except Succinea, 

 but dead shells were abundant, as follows: 



Sphcerium pilsbryanum Sterki. Valvata humeralis calif ornica Pils. 



Pisidium near variabile Prime. Valvata utahensis (Call), type 



Pisidium sp. locality. 



Anodon'a luahlamatensis Lea. Ancylus sp. 



Succinea haydeni W. G. B., living. Lymncea proxima Lea. 



Vitrea hammoriis Strom. Lymncea stagnalis appressa Say. 



EuconulusfulvusalaskensisFils. Lymncea utahensis Call, type 



Zonitoides arhorea (Say). locality. 



Carinifex newherryi (Lea) . Lymncea humilis modicella Say. 



Fluminicola seminalis (Hinds) . Lymncea ohrussa Say. 



Fluminicola fusca (Hald.). PlanorbistrivolvisbinneyiTryon. 



Amnicola limosa (Say). Planorhis parvus Say. 



Paludestrina longinqua (Gld.). Physa lordi Baird. 



P. t. binneyi here attains large size, the largest one measured 

 having a diameter of 36 mm., and all specimens collected have the 

 characteristic strap-like whorls and strong sculpture of this form, 

 but the aperture is considerably expanded and not quite typical. 

 Judged by Baird's description and Binney's figures, the Physa from 

 this station appears to be true P. lordi. Material from the Douglas 

 Lake district, Michigan, referred by some conchologists to lordi, 

 by others to P. ancillaria parkeri, differs markedly from the Utah 

 Lake form and Binney's figures in its tabulate form, which is due 

 to the decidedly flat upper surface of the last whorl and the much 

 more acute angulation of the shoulder. The same is true of material 

 from Chelsea, Quebec, though the difference in that case is not so 



'3 8th Ann. Rept. (Hayden's) U. S. Geol. and Geog. Surv. Terr., for 1874, 

 pp. 391, 406. 



^^ Pilsbry, "Catalogue of Amnicolidse of the Western United States," The 

 Nautilus, XII, pp. 122-123, 1899. 



