96 THE NAUTILUS. 



to dilatatus are still of uncertain status. Among these are some 

 shells hardly distinguishable from multilineatus Van., occurring 

 as far east as Ohio and Pennsylvania. There is in eastern 

 Pennsylvania a form more depressed than dilatatus, with the 

 periphery sharply angular and central, the lip thin, umbilicus 

 wider than in dilatatus ; this form may be called P. d. j^ennsyl- 

 vanica (types 67477, spring near Glenolden, Delaware Co. , Pa., 

 coll. by E. G. Vanatta) .— H. A. P. 



PUBLICATIONS EECEIVED. 



A List of the Land and Fresh-water Shells of the Isle 

 OF Pines, by John B. Henderson. Annals of the Carnegie 

 Museum, vol. 10, 1916. 35 species are recorded, 28 being land 

 shells. 16 species are special to the island, the two species of 

 Priotrochatella and two of Pineria being isolated types, not re- 

 lated to the Cuban fauna. The rest are Cuban species, or most 

 nearly related to those of Cuba. 



Hunting Mollusca in Utah and Idaho, by Junius Hender- 

 son and L. E. Daniels. Proc. Acad. Nat. Sciences Phila., 1916, 

 pp. 315-339, 4 plates. This important paper is devoted chiefly 

 to the genus Oreohelix. The field chosen is in northeastern Utah 

 and the adjacent part of Idaho, the scene of Henry Hemphill's 

 remarkable finds, which excited the attention of conchologists 

 over twenty-five years ago. Hemphill's localities were rather 

 indefinite, and his material was assorted in such a way as to 

 make the distinction between individual and racial variations 

 uncertain. The expedition of 1915 was therefore devoted to 

 search for his localities and to collecting in the same stations so 

 far as they could he determined. Nearly all of the Hemphill 

 species and other forms were rediscovered, and a large part of 

 the paper is devoted to the consideration of their characters and 

 values, the several forms being illustrated. New forms found 

 were : Oreohelix heni'philli eurekensis, 0. strigosa form toolensis, 0. 

 haydeni corrugata and 0. tenuistriata. The discussion of Oreohe- 

 lix periphenca (including numerous Hemphillian varieties) may 

 be mentioned as particularly valuable. In the Oquirrh Moun- 

 tain but little good material could be found, as the range has 

 suffered severely from fires, and the Hemphill colonies have 

 probably been burned over. 



To everyone studying Oreohelix this paper is indispensable ; 

 but the discussion of variation in its relation to taxonomy, 

 pp. 317-320, will interest all who deal with such problems. — 

 H. A. P. 



