THE NAUTILUS. 27 
The specimen has been presented by Mr. Harkins to the collec- 
tion of the American Association of Conchologists. 
C. W. J. & H. A. P. 
DESCRIPTION OF A NEW VITREA FROM PUGET SOUND. 
BY W. H. DALE. 
Vitrea Johnsoni n. s. 
Shell small, pale waxen-white or translucent, of three and a half 
whorls, rather rapidly enlarging, smooth except for delicate radial 
lines of growth which are occasionally visible; suture distinct, 
slightly impressed ; spire hardly elevated but not flattened ; periphery 
rounded, base convex, imperforate, the pillar lip strongly reflected 
close to the axis; aperture semilunar, sharp edged, the peristome 
hardly flexuous, the upper edge a little in advance of the lower; 
resting stages indicated internally by one or two narrow whitish 
streaks where the shell is slightly thickened, but which do not pro- 
ject internally. Height of shell 1, major diam. 2, minor diam. 
15 mm. 
This differs from V. indentata by the absence of the impressed radial 
grooves and by its much smaller size for the same number of whorls; 
from V. subrupicola Dall by its more rapidly enlarging last whorl 
and more ample aperture in specimens of the same size. The latter 
species has one whorl less in the same diameter, and attains, when 
fully developed, a much larger size, besides having a peculiarly flat- 
tened appearance both above and below. 
V. Johnsoni was named in honor of Prof. O. B. Johnson who has 
done so much to promote interest in the mollusk fauna of the Puget 
Sound region. It was collected under chips with Vitrea pugetensis 
near Seattle by Mr. P. B. Randolph. 
It may be mentioned that the original types of V. subrupicola 
were collected at Clinton’s Cave, Utah, by Dr. Packard; while 
much larger specimens, though with the same number of whorls, 
were collected later at Cave City, Calaveras Co., California, by 
Hemphill. After careful study I have found no characters except 
size to separate these from the Utah specimens, but in view of this 
difference the former may take the varietal name of spelea. Neither 
form can be confounded with V. indentata by any one who critically 
compares good specimens. A specimen of V. subrupicola with four 
