MONOGRAPH OF THE GENUS STROPIIIA. 
175 
but along its southern border ; I have marked its range with a series 
of °s. The form is not abundant in numbers and rather scattering. 
52 STROPHIA RESTRICTA Novo. 
Restricted Strophia. 
Fig. 58. A, front view, B, side view, of type. 
DESCRIPTION. 
are 
Fig. 58, 
Sp. Ch. Size, very small. Shell, rather heavy and thick. 
Striations, present. Whirls, nine. Examined seventy-five specimens. 
Form of shell, an elongated oval, the first and second whirls 
being about equal in diameter, the third is a little smaller, then the 
shell slopes to a rather acute point, forming an angle of fift) r -eight 
degrees. The striations are quite numerous, nineteen to the first 
whirl, are about as wide as the interspaces between them, 
beautifully rounded and polished, very regular 
and arranged in lines. 
Aperture, very small, not quite as wide 
as one half of the shell, arched, and about as 
high as wide. Lower tooth, not prominent, 
about .08 high, as wide as high, and about twice 
as long as high. It is not elevated, and is set 
back nearly once its length from the frontal bar. 
Upper tooth, absent. 
Margin produced forward about as far as 
the diameter of the shell, it is nearly straight 
and not inclined to the right. It is about as 
thick as the shell behind it, beveled below on 
either side, marked with fine lines of growth, but doubled above with 
lines of growth between the two divisions. The frontal bar is well 
developed, and protrudes beyond the striations, and is but little 
inclined. 
Color of shell, externally, ashy white, mottled, but not trans- 
versely, with reddish brown. Internally, brown, rather dark in shade, 
extending quite to the margin, but this and the tooth are paler. 
A B 
Strophia restricta. A, iront, 
B, side view. 
DIMENSIONS. 
Size of type, .75 by .32. Largest specimen, .92 by .37 ; 
smallest, .62. by .32. Greatest diameter, .37 ; smallest, .32. Longest 
specimen, .92 ; shortest, .62. 
