1904.] NATURAL SCIENCES OF PHILADELPHIA. 407 
species. These are enough to identify its fauna with that of another 
deposit, locality No. 806 (see Map No. 2), where the shells are abundant 
and well preserved, but with no external evidence by which to estimate 
their age. This locality is another hard-stone quarry, where the 
excavations have uncovered a number of crevices and a cavern of 
considerable size. The shells are in stalagmitic conglomerate at the 
mouth of the cavern, and in the crevices, and also in the earth that 
fills certain of the pockets. They may represent a considerable period 
of time, but there is no way to distinguish any difference in age. 
Another deposit at the same locality as the one last mentioned is a 
horizontal band of slightly reddish rock about half-way up the face of 
the quarry, and from two to three inches thick. This is part of the 
rock out of which the cave and pockets were eroded, so that the shells 
here are very much older than the others at No. 806; but here, again, 
there is no basis for a comparison with the date of No. 807. The re- 
mains here are obscure casts of Pecilozonites circumfirmatus and of 
what appear to be Vertigo and Carychium. 
I collected from three other beds in this neighborhood what seem to 
represent the same formation as the pockets of No. 806. 
The first of these, locality No. 814, is a newly opened quarry just 
south from Coney Island. A red-earth pocket ‘here contained a fine 
series of Pacilozonites nelsoni, very large, but wanting the most ex- 
treme examples of both the elevated and the depressed variations. 
There are also fossiliferous conglomerates in caverns at this quarry, 
but they are composed of gravel too fine to contain Pecilozonites 
nelsonv. 
The best fossil specimens of Pecilozonites reinianus came from local- 
ity No. 815, near Harrington House. They are noticeably larger than 
the recent specimens. No. 816, near 815, but on the shore of Castle 
Harbor, has large numbers of Pecilozonites bermudensis zonatus and 
Pecilozonites reinianus, the former associated with Pecilozonites 
nelsoni in a conglomerate. 
Bifidaria rupicola, found in the red earth of No. 806, may perhaps be 
an importation subsequent to the formation of No. 807, and Strobilops 
hubbardi, found at the same place, possibly may not have been a per- 
manent resident; but we can safely assume that all the other species 
from the above localities belong to the epoch of the red-earth streak 
at No. 807. The remaining three deposits from which I collected are 
clearly much more recent than No. 807. These are in sand pits, in 
the nearly pure sand of partially solidified dunes. None of them have 
any clear signs of red earth, either about them or overlying them. 
