MONOGRAPH OF THE GENUS STROPHIA. 
119 
Most of these shells were on the ground or on the grass near it 
and occupied in all about one hundred square j r ards, being thus 
extremely limited in distribution. The colony had recently been 
much disturbed by the cutting of the bushes over and about it and 
some specimens had been thrown across the path, thus it was difficult 
to trace out the location of the various forms. Thorndike’s Strophia 
was quite abundant in this place, but I could not trace it elsewhere and 
am sure that it did not extend its range beyond the borders of the 
path to the westward, nor beyond the cemetery wail to the eastward, 
and not over ten yards north and south. All specimens were 
hybernating when we found them. 
I have named this species for Dr. T. W. Thorndike, of Boston, an 
enthusiastic naturalist, who accompanied me on the expedition to the 
Bahamas. 
39 STROPHIA CINEREA Novo. 
Cinerous Strophia, 
Fig. 35 . A, front view ; B, side view, both of the type. 
DESCRIPTION. 
Sp. ch. Size, rather large. Shell, not very thick. Striations, 
present. Animal, dark broivn in color. 
Whirls, ten. Examined 2,000 speci- Fig. 35. 
mens. 
Form of shell, cylindrical, the first 
three wffiirls being about equal in 
diameter, the fourth is but little 
smaller, then the shell slopes abruptly 
A B 
Strophia cinerea. B, front view of type. 
A, side view of the same. 
to a blunt point forming an angle of 
sixty-five degrees. The striations are 
quite numerous, twenty-five on the 
first whirl, rather prominent, regular, 
arranged in lines, slightly inclined 
from right to left and a little 
narrower than the interspaces be- 
tween them ; they are not furrowed, but are rounded and smooth. 
Aperture, rather small, rather open, but narrows quickly from the 
entrance. Lower tooth, not prominent, short, about .04 high, a little 
more than twice as long as high, and its position is about central, but 
