MONOGRAPH OF THE GENUS STROPHIA. 
129 
DIMENSIONS. 
Size of type, 1.00 by .36. Largest specimen, 1.10 by .37 ; 
smallest, .81 by .36. Greatest diameter, .4b ; smallest, .36. Longest 
specimen, 1.10; shortest, .81. 
OBSERVATIONS. 
There is but little variation in this delicately-tinted Strophia, 
either in form, color, or size. The peculiar flesh-colored tint recalls 
at once the color of Strophia nuda, described in Yol. I, of these Con- 
tributions, but that shell was smooth and of quite a different form. I 
know of no other Strophia which exhibits this singular color. 
HABITS AND DISTRIBUTION. 
I found Strophia albea on the south side of Spruce Key (See fig. 
40), clinging to the scanty shrubbery that grows from the naked rock 
on this nearly desolate little island. It evidently forms an example 
of a nearly extinct species for, although, in company with Mr. Curtiss 
I searched with great care, but three living specimens were obtained on 
the entire key, yet the ground was strewn with dead specimens, many 
of which showed marks of having been on the rocks for years. 
35 STROPHIA CORYI Novo. 
Cory's Strophia. 
Fig. 39, A, front view, B, side view of type, 
DESCRIPTION. 
Sp. Ch. Size, medium. Shell, quite heavy. Striations, present. 
Whirls, ten. Examined, 2,000 specimens. 
Form of shell, quite cylindrical, the first three whirls being 
about equal in diameter, the fourth is but little smaller, then the 
shell slopes to a rather blunt point, forming an angle of fifty-five 
degrees. The striations are not numerous, nineteen to the first whirl; 
they are not prominent, very regular, not furrowed, but rounded, 
narrow, are about half as wide as the interspaces between them, but 
are not arranged in lines, and very slightly inclined from right to 
left. 
Aperture, quite small and rather contracted. Lower tooth, quite 
prominent, about .04 high, and about twice as long as high, nearly 
