» d, EE 
A86 Shells of Massachusetts, A 
took to prepare the list.of shells. "This was done 
with much labor and care; the number of species 
was augmented to 165, and many important: correc- 
tions were made in the nomenclature of the preced- — 
ing catalogue. | 
A still further resolve in June, 1837; for the con- 
tinuation of the geological and zoological survey of 
the State, by which the different departments were 
allotted to distinct Commissioners, gave opportunity 
for a still more accurate determination and enumera- 
tion of our Fauna. In conchology, the explorations i 
of Doctors Storer, Yale, Bass, Forsyth, and Prescott, 
and Messrs. Binney, Couthouy, Adams, Whittemore; 
Greene, Tuckerman, and Col. Totten, had afforded 
materials for rendering our list of shells much more 
extensive and complete than it could previously have 
been. The- Report on the Mollusca, Crustacea; and 
Radiata, is just now from the press, and affords the 
following results, as to the testaceous Mollusca. 4 
The whole number of species is 274; which is 
an addition of 100 to the list of 1835, and of 148 
to that of 1832, or more than doubling the number- 
Of these there belong to the class Annelida 6 spe- 
cies; to Cirripedes 12 ; Conchifera 97 ; Brachiopoda 
2; Gasteropoda. 154. Twenty-nine species belon 
to the land, 42 to fresh water, and 203 are marine. 
With these we might mention nine species of naked 
Mollusca, two of which are terrestrial, and seven 
marine. Several genera, not previously observed, - 
have been discovered. Such are Panopea, Anatin& | 
Thracia, Osteodesma, Montacuta, Kellia, Lucina, 
Terebratula, Dentalium, Cemoria, Bulimus, Sig9- 
