MONOGRAPH OF THE GENUS STROPHIA. 
17 
were the stronghold of the Pointed Strophias, and I did not find them 
elsewhere. The border line to the north, was sharply defined at the 
clearing, but south, they straggled out along the higher bushes for some 
few hundred feet, but the entire space occupied by them, did not exceed 
a quarter of an acre in extent. 
In habit, the Pointed Strophia is highly gregarious, hundreds oc- 
curring together in a few square yards. They appear to feed upon the 
foliage of the bushes, on which they were clinging, a small leaved shrub 
which I did not, however, find in bloom, so cannot tell to what family 
it belongs. 
5. STROPHIA FESTIVA Novo. 
Pictured Strophia. 
Plate II, 5 & 5b, shell: 5c, young. 
DESCRIPTION. 
Sp. Ch. Size, large. Shell, robust and heavy. Striations, absent. 
Tentacles, short, about one third as long as eye peduncles. Teeth, two, 
both very long. Whirls, 11. Examined 22 specimens. 
Form of shell, inclined to cylindrical, the first and second whirls 
being equal in diameter, and the third is but little smaller, and from 
this the shell tapers to quite an acute point, making an angle of .55 de- 
grees. There are only faintly defined lines of growth which, however, 
assume more prominence on the back of the upper w hirl, but these 
prominences are widely separated and irregular. The sutures between 
the whirls are not deep. 
Aperture, rather small, but open, the diameter of the cavity slightly 
increasing just w ithin the entrance; the teeth are prominent, the lower, 
which is placed midway between the two walls, is .25 long and about 
.05 high, and the upper which is situated just above it, measures only 
.03, but makes a complete turn around the column. 
The margin is not produced forward beyond the diameter of the 
shell, and is not greatly thickened, measuring .08, and the outer poste- 
rior portion is provided with a thin, quite prominent, edge. The frontal 
bar is not very prominent. 
Color of shell, externally, bluish white, marked with longitudinal 
spots of purplish brow T n, that from the third whirl dow nw ard exhibit a 
tendency to become fused together and form rings near the middle of 
the whirls. The spottings are somewhat interrupted, and are fewer on 
