20 
DESCRIPTION OF SPECIES. 
Known from S. festiva, its nearest ally, by the small size, more 
regular markings, and thinner margin, and from all others, by the ab- 
sence of striations, long teeth, and purplish markings. 
DISTRIBUTIONS AND HABITS. 
This species occurs in a very limited area, on the west end of Little 
Cayman. Near the southern termination of the western path that ex- 
tended across the key, or rather near its junction with the main path* 
was a patch of guinea-grass; in this, were numerous open spots, and in 
them, or on their borders, these Strophias lived, occupying in all about . 
a half acre. 
The habits of the Painted Strophias are rather more social than 
those of the Pictured, as they occur in smRll groups of a half dozen or 
more, but are nowhere common. 
7. STROPHIA LINEOTA Novo. 
Lined Strophia. 
Plate II, 7 & 7 b, shell. 
DESCRIPTION. 
Sp. Ch. The size is medium. The shell is rather heavy. The 
striations are present. Tentacles, about one third as long as the eye 
peduncles, Teeth, two and quite long. Whirls, 10. ' Examined 1,000 
specimens. 
Form of shell, cylindrical, with the first three whirls equal in diam- 
eter. From the third whirl, the shell slopes rapidly to a point, making 
an angle of 65 degrees. The striations ape rather numerous, 20 on the 
upper whirl, prominent, regular, although not arranged in lines; they are 
slightly inclined from right to left, and the interspaces are about equal 
in width to the prominences. The striations are not furrowed and the 
edges are smooth and rounded. 
Aperture, large and open, measuring a trifle more just within than 
at the entrance. Low~er tooth, not very prominent, .04 high by .18 long, 
and its position is about its width to the right of the center; the upper 
is not as prominent, is placed considerably above it, .05, and measures 
.02, but makes a complete turn around the column. 
Margin, not produced forward beyond the diameter of the shell, 
but is inclined slightly to the right, beyond the side; it is not greatly 
thickened, measuring .04, but the outer posterior portion is produced 
backward into a thin, but not prominent, edge that is rolled slightly 
