316 PROCEEDINGS OF THE ACADEMY OF [May, 



fine series of Hemphill's varieties, which have been critically examined 

 by one of the authors. The other author has some of Hemphill's 

 material in his own collection. 



One of Mr. Clapp's collections was formerly owned by Mrs. Geo. 

 Andrews. The shells in this series are mounted on 57 blue cards 

 bearing the printed legend "Genus Pyramidula. Group of Pyra- 

 midula alternata." White printed slips pasted below the specimens, 

 use the generic name Helix instead of Pyramidula, and all of the 

 Oreohelices are labelled as varieties of P. alternata. All of the printed 

 labels for the Utah material give the localities merely as "near Salt 

 Lake," evidently meaning the lake itself, not the city of that name. 

 Included in that vague locality are shells that undoubtedly came 

 from as widely separated areas as the Oquirrh mountains on the 

 south and Franklin, Idaho, on the north. This collection seems to 

 have been made up during or after 1890, as it includes forms described 

 that year. The other series was purchased by Dr. Clapp directly 

 from Hemphill in 1896, at 25c per lot, 153 trays of two specimens 

 each. The printed labels in this series designate all the Oreohelices 

 as varieties of Helix strigosa, and the locality stated for all the Utah 

 material is simply "Utah," but in most instances more definite 

 localities, such as "Box Elder Co.," "near Ogden" and "near Salt 

 Lake," have been added with pen and ink. 1 



The soft anatomy of each lot of Oreohelix collected alive, with a 

 few exceptions, has been studied by Dr. Pilsbry, whose comments 

 may be found in a separate paper prepared by him. We are also 

 greatly indebted to him for aid in identification of some of our 

 material, and for advice in clearing up difficulties in nomenclature 

 and the literature of the subject. 



The authors met, by appointment, at Eureka, Utah, on August 

 26, 1915, and worked northward into the edge of Idaho, finishing the 

 field work on September 17. Mr. Daniels had visited Stations 

 1, 1§, 2, 3, 4 and 5 on his way down from Montana to the rendezvous, 

 but we both afterwards visited No. 5, dividing it into three stations, 

 namely 30, 31 and 32, besides visiting others in the same vicinity. 

 The main object of the expedition was to study the Oreohelices, and 

 as our time was limited, but little of it was spent in the search for 

 other genera. 



1 Some of the earlier sets sent out by Hemphill, such as that in the museum 

 of The Academy of Natural Sciences of Philadelphia, have practically the same 

 data on the labels that were given by him in Binney's Supplement and The 

 Nautilus; most of the labels being printed. 



