MONOGRAPH OF TEE GENUS STROPHIA. 
19 
straight, of varying widths, and all excepting on upper whirl are wider 
on the upper portions than on the lower, but usually a little narrower 
than the interspaces between them. Some are furrowed, but the ma- 
jority are smoothly rounded and polished. The whirls are a little bul- 
ging, and the suture is quite deep. 
Aperture, widely open, but rather contracted deep within. The 
lower tooth is small, about .03 high, and rather more than twice as long 
as high ; it is about central in position, and is set back not quite twice 
its length from the frontal bar. The upper tooth is not as high as 
the lower, but extends back around the column. 
The margin is produced forward about as far as the diameter of 
the shell, and is slightly inclined to the right, and a little beyond the 
side of the shell. It is reflexed outward about .10, is a little rolled 
over, and the edges are sharpened and roughened by breaking. The 
frontal bar is thin and scarcely developed in the middle, and the stri- 
ations appear within it as prominences which increase in size far back 
within the shell. 
Color of shell, externally, yellowish white, marked everywhere 
with longitudinal, zigzag lines of reddish brown, which are occasionally 
broken into lines. Internally, pale yellowish brown, becoming white on 
the margin. 
DIMENSIONS. 
Size of type, 1.20 by .50. Size of one other specimen examined 
1.17 by .50. 
OBSERVATIONS. 
This species differs on one hand from S. mumiola by the much 
larger size and more flanging margin, and on the other from S. mumia 
by the smaller size, at least .10, than the smallest specimen of the true 
Mummy Strophia, in the comparatively smaller mouth, less flanging mar- 
gin, predomination of the white color, with a tendency in the red mark- 
in gs to assume longitudinal patches, which are rather less brokeninto 
horizontal lines. The two specimens found in the collection were sim- 
ply labeled, “ Cuba.” 
65 STROPHIA FERRUGINEA Novo. 
Rusty Strophia. 
Plate IV, fig. 5, front, fig. 6, side view of type. 
DESCRIPTION. 
Sp. Ch. Size, small. Shell, rather thick. Strations. present. 
