370 A. EB. Verrill—Post-pliocene fossils of Sankoty Head. 
In each case the relative abundance is indicated. I have 
also added the present distribution on the American coast, in a 
general way, as well as a few notes on the geological distribu- 
tion of each species. Fuller information on the distribution of 
the species has been given in the Report referred to. 
Mo.uuvsca. 
Tritia trivittata Adams. Common. 
Florida to Gulf of St. Lawrence; low-water to 40 fathoms. 
Fossil in the Post-pliocene of Point Shirley, Gardiner’s L, Vir- 
ginia and southward ; in the Miocene of Maryland, South Caro- 
-lina, ete. 
Ilyanassa obsoleta Stimpson. Common. : 
Florida and Gulf of Mexico to Southern Maine ; local in the 
southern part of the Gulf of St. Lawrence; littoral to 2 
athoms. Fossil in the Post-pliocene of Point Shirley, Virginia, 
South Carolina, ete. 
Urosalpinz cinerea Stimpson. Common. 
Tampa Bay and Eastern Florida to Massachusetts Bay, and 
local farther north to Gulf of St. Lawrence; littoral to 10 
fathoms. Post-pliocene fossil at Point Shirley, Gardiner's L, 
Virginia and southward ; in the Miocene of Maryland. 
Kupleura caudata Adams. One fine specimen. 
Gulf of Mexico and Eastern Florida to Cape Cod; low- 
water to 8 fathoms. In the Post-pliocene from Virginia to 
Florida ; Miocene of Maryland and South Carolina. 
Astyris lunata Dall. One specimen. 
Alabama and Florida to Massachusetts Bay ; low-water to 
14 fathoms. Fossil in the Post-pliocene of Gardiner’s L and 
South Carolina. 
Cerithiopsis Greenit Verrill. Four specimens. 
South Carolina to Massachusetts Bay; two to 10 fathoms. 
Crepidula fornicata Lamarck. Abundant. 
ulf of Mexico to Southern Maine, and local in the southera 
art of the Gulf of St. Lawrence; low-water to 15 fathoms. 
ost-pliocene fossil at Gardiner’s L, South Carolina, ete. ; and 
Miocene in Maryland and South Carolina. 
Crepidula plana Say. Common. 
Distribution same as the preceding, from which, however, It 
is very distinct. 
Crepidula convera Say. Not common. er 
Distribution like the two preceding, from both of which it 18 
pertectly distinct (although confounded with @. fornicaia ee 
Tryon and others). Fossil in the Post-pliocene of Virginia-a0 
South Carolina. 
Odostomia trifida Gould. Common. 
_ New Jersey to Massachusetts Bay ; low-water to 5 fathoms. 
