THE NAUTILUS. 27 



Physa var. Columbiana Ilemphill. 



Shell globose or moderately elongated, sliining, solid ; of a dark 

 horn, or chestnut color ; whorls four, the last occupying about three- 

 quarters the entire length of the shell ; suture well defined and 

 generally marked by a fine yellowish line ; spire short, obtuse ; aper- 

 ture long and moderately wide ; outer lip simple, thickened inter- 

 nally with a dark chestnut deposit that shows on the outside as a 

 yellowish band ; columella lij) somewhat sinuous, and well folded on 

 the body whorl. 



Length of an elongated specimen |, breadth fV of an inch. 



Length of a globose specimen i, breadth jiy of an inch. 



Habitat : Columbia River, Astoria, Oregon. 



I collected nearly two hundred specimens of this shell at the above 

 locality in the month of November, 1877. They were found adher- 

 ing to the underside of stones that are submerged several feet during 

 high tide, associated with Goniobasis plicifera var. bulimoidesTryou. 

 On comparison with specimens of Physa ampullacea Gld. collected 

 by me in Owens River Valley, in 1869, and a few specimens from 

 the upper Columbia also collected by myself, I am satisfied this shell 

 is a small or miniature form of that species and not a variety of 

 Physella globosa Hald. as supposed by the late G. W. Tryon. There 

 is considerable variation in the form of this shell, but there is no 

 plication on the columella, the only character in the genus Physella 

 worth noticing. jNIy specimens of Physa ampullacea Gld. from 

 Owens River Valley, are very large and globose, with the columella 

 strongly twisted, and are fully as well qualified to enter the genus 

 Physella as the present specimens. 



NOTES ON SOME NORTH AMERICAN PUPID^E WITH DESCRIPTIONS 

 OF NEW SPECIES. 



BY DR. V. STERKI, NEW PHILADELPHIA, OHIO. 



Pupa Hemphilli sp. nov. 



In examining a lot of about 45 specimens named P. calamitosa 

 Pilsb., from the banks of St Thomas River, Lower California, I 

 found that there were two distinct forms in them. The author says, 

 in his description of P. calamitosa:^ "Several specimens have 

 only one lamella on the outer lip and are rather larger than the 

 1 The Nautilus iii, No. 6 (Oct., 1889). 



