[FROM THE TRANSACTIONS OF THE CoNnNECTICUT ACADEMY, Vor, V, APRIL, 1882.| 
CATALOGUE oF MARINE MoLLUSCA ADDED TO THE FAUNA OF THE 
New Eneianp ReGion, DURING THE PAST TEN YEARS. By 
A. E. VERRILL. 
Tur following catalogue is intended to include all the Mollusea 
now known to inhabit the New England region that are not included 
in Binney’s edition of Gould’s Invertebrata of Massachusetts, pub- 
lished in 1870. 
In the “ New England Region” I include, on the north, the coasts 
of Nova Seotia and New Brunswick, and their outlying banks; 
while on the south, I include the entire region, about 100 to 120 miles 
wide, between the shore and the Gulf Stream, off the southern coast 
of New England, and embracing all depths down to 600 fathoms.* 
I have also included the free-swimming and floating forms, ordinarily 
inhabiting the same region, which may be considered as meeting and 
including the innermost edge of the Gulf Stream m summer, but 
most of these surface forms are usually to be found, in summer, far 
inside of the actual limits of the Gulf Stream. The Grand Banks of 
Newfoundland and the northern parts of the Gulf of St. Lawrence 
I have considered as extra-limital, for my present purposes. Those 
localities are inhabited by an extremely arctic fauna, including many 
species of mollusca that have not yet been found farther south. 
Among these are several species of bueccinum and allied genera. 
Some of these I have indicated in the following list, for convenience 
of reference, but have put their names in italic type to distinguish 
them from those considered as more properly belonging to the New 
England region, which are put in black-faced type. A few species 
that were known to inhabit New England, before the publication of 
Binney’s Gould, but were erroneously omitted from that work, are 
also introduced into this list, in italic type. 
No attempt is here made to give the complete, nor even the 
general synonymy of the well-known species. Except in special cases, 
only those references are given which are necessary to show the 
origin of the name adopted, together with references to at least one 
accessible work where a description or figure may be found.t 

* Descriptions of the special features of this off-shore region may be found in the 
Amer. Journ. Science, vol. xx, p. 390, Nov., 1880; vol. xxii, p. 292, Oct., 1881: and 
Proc. National Museum, for 1880, p. 356. 
+ In this connection it gives me pleasure to highly commend the excellent receit 
work of G. O. Sars, viz: Mollusca Arcticee Norvegiz. This is almost a manual for 
the northern New England Mollusca, and contains a profusion of accurate illustrations, 
