74 
MONOGRAPH OF THE GENUS STROPHIA. 
DISTRIBUTION AND HABITS. 
The Shining Strophias occurred in numbers, in exposed situations 
in the patches of Guinea grass that grew on the margin ot the path, 
of which 1 have spoken elsewhere, that crosses the west end of Little 
Cayman. They were clinging to the stems of the grass, at the roots of 
which lay hundreds of dead specimens. They appeared to be restricted 
to two or three of these small clearings. 
17 . STROPHIA ALBA Novo. 
White Strophia. 
Plate VII, 17, 17a & 17b, shell; Fig. 9, a, front, b, side; Fig. 11, 
section. 
DESCRIPTION. 
Sp. Ch. Size, large. Shell, not very heavy. Striations, present. 
Teeth, two, both short and not prominent. Whirls, 11. Examined 
250 specimens. 
Form of shell, cylindrical, with the 
first two whirls equal in diameter and 
the third is slightly smaller; from this, 
the shell tapers to a blunt point, form- 
ing an angle of G5 degrees. The stria- 
tions are numerous, 24 on the first whirl; 
they are prominent, regular, but are not 
arranged in lines, are inclined from the 
A right to the left; and the interspaces are 
Fig 9. about as wide as the prominences. The 
striations are flattened on top but are not furrowed and the edges are 
smooth and rounded. 
Aperture, very large and open, measuring more just within than 
at the entrance. Lower tooth not prominent, .03 high by .12 long, and 
its position is about central; upper tooth, a mere protuberance. 
Margin, not produced forward beyond the diameter of the shell, and 
is slightly inclined to the right, beyond the side; it is thin, measuring 
only .03; and the edges are slightly rolled backward. Frontal bar, not 
well developed but the striations do not appear within it. 
Color of shell, externally, bleached white throughout; internally, 
pale brownish purple, fading into flesh color on the teeth and margin. 
