112 
MONOGRAPH OF THE GENUS STROPHIA. 
I liberated a number of these Strophias in the yard in which we 
lived, on the corner of Bay Street and Kemp’s Road, in order to see 
if they would survive, as a species, under different environment, and 
fully intended to have taken a lot to U Key, but failed to do so as we 
didnot visit this key a second time. 
Mr. Curtiss made an interesting discovery regarding the form 
which inhabits Spotter’s Key, as he found three pairs which were on 
the ground clinging together for mutual fertilization. This was on 
March 27th, directly after rain. 
28 STROPHIA CURTISS!! NIVEA Novo. 
Snowy Strophta. 
DESCRIPTION. 
Sp. Ch. Size, medium. Shell, not very heavy. Striations, 
present. Teeth, two, and both small. Whirls, ten. Examined forty 
specimens. 
Form of shell, a pointed cylinder, with the first whirl the largest, 
then the next three are successively a little smaller, after which the 
shell slopes rather gradually to a point, forming an angle of 45 
degrees. The striations are not numerous, twenty-two on the first 
whirl, are not prominent, are irregular in form, and not arranged in 
lines ; they are narrow, being about one half as wide as the inter- 
spaces between them ; are smooth and rounded. 
Aperture, rather small, and slightly contracted at the entrance. 
Lower tooth, very short, about .02 high, and about three times as long 
as high. It is about central in position, and is set well back from the 
frontal bar, about .08. The upper tooth is also set well back, and is 
about as large as the lower. 
Margin, produced forward nearly as far as the diameter of the 
shell, and is inclined very slightly to the right, the edge is very thin, 
about .02, and is produced upward into a sharp edge, but not rolled 
backward. The frontal bar is not very prominent, and the striations 
appear within it. Color, externally, pure white without deckings ; 
within the aperture, slightly tinted with flesh color. 
DIMENSIONS. 
Size of type, .90 by .37. Largest specimen, 1.06 by 47. Smallest. 
.82 by .38. Greatest diameter, .47 ; smallest, .35. Longest specimen, 
1.06; shortest, .87 
