172 
MONOGRAPH OP THE GENES STROPHIA. 
HABITS AND DISTRIBUTION. 
I have said that Little Galden Key lies at the entrance of Middle 
Bight, and about a half mile directly west of it is a long, narrow islet, 
called Goat Key, thus it is situated well within the Bight ; hut owing 
to the trend of the southern shore of the Bight it is quite near this 
portion of the main island. The key is only about one eighth of a 
mile long, and nowhere over fifty yards wide. This little spot of land, 
however, is of great interest from a conchological point of view, for it 
not only contains two distinct species of Strophia and one sub-species, 
but these forms are in themselves remarkably interesting, as will 
be seen. 
So important is this Key, and the Strophias which live upon it, 
that I have given a little chart of it (See Fig. 56) which, although 
Fig. 56. 
Diagram of Goat Key, Middle Bight, Andros. P, eastern portion of Key, E, western ; f, section) 
inhabited by Strophia pilsbryi. °, section inhabited by S. p. evolva. J, spot inhabited by 
S. restricta. 
accurate enough, perhaps, for the purpose for which it is intended, 
must be regarded simply as a diagram. 
As will be seen by consulting the figure, also, the key is nearly 
divided into two parts, these two parts being connected, in fact, by a 
narrow sand bar over which the water flows during very high tides. 
The easternmost portion is surrounded by a sand beach, but the central 
portion is higher and is covered by a spare growth of bushes. This 
portion of the key is the home of Pilsbry ? s Strophia, but it was not 
common there at the time of our visit in April, 1893. The form No. 
1, which I have indicated, occurred toward the western end of this 
portion. I have noted the range of the Strophias by a number 
of fs. 
