20 
MONOGRAPH OF THE GENUS STROPHIA. 
Whirls 9, the upper of which, including margin, is about as long as the 
remaining whirls together. Examined 9 specimens. 
Form of shell a pointed cylinder with the first three whirls about 
equal in diameter; below these the shell slopes to a rather obtuse pointy 
forming an angle of sixty degrees. Striations, rather numerous, twenty- 
six to the first whirl, not very prominent, quite regular, straight, not fur- 
rowed, rounded and polished and a little narrower than the interspaces 
between them ; the v are slightly flattened and enlarged on the lower 
portions just above the suture. The whirls are bulging on the upper 
third. 
Aperture, small, slightly contracted within the entrance. The lower 
tooth is quite high about .05, and is three times as long as high. It is set 
back about once its length from the frontal bar. The upper tooth is 
about one half the height of the lower, but extends back around the col- 
umn; it is placed high, about half way up the side of the aperture. 
The margin is not produced quite as far forward as the diameter of 
the shell, is a little inclined forward, and a little to the left, but scarcely 
beyond the side of the shell. There is but little development of the front- 
al bar. The striations appear within the bar, but not as prominences. 
The margin is thin, about .03, is a little reflexed outward and although 
it is not much rolled over, is not beveled, and the edge is a little sharp- 
ened. 
Color of shell externally, rusty red with striations white; internally, 
purplish brown, becoming paler on the margin. 
DIMENSIONS. 
Size of type .90 by .25. Largest specimen, .90 by .40; smallest, .78 
by .37. Longest specimen .90, shortest, .75. Greatest diameter, .40: 
smallest, .35. 
OBSERVATIONS. 
The chief variation in the few specimens of this singular species 
which I have seen is in the thickening of the margin in some specimens 
and in the size. 
I know of no other species of Strophia which agrees with this in the 
peculiar bulging of the whirls on their upper parts, combined with the 
flattening and enlarging of the striations on the lower portion in the de- 
pression of the whirls. The color is also peculiar, and is quite unlike 
that of any species of Strophia which I have seen. 
1 found these shells in the collection bearing the label “ Washed up 
by the tide near Jeremie, Cote de Fer.” Jeremie is in Hayti, on the 
