406 <A. EF. Verrill—Results of recent Dredging Expeditions 
2. Hard Bottoms. 
a.—A large collection from 52 to 90 fathoms, near Cashe’s 
Ledge, situated about 90 miles south from the mouth of the 
Penobscot River. (Number 21.) 
6.—Several lots from Jeffrey’s Ledge, 6 to 14 miles northeast 
from Cape Ann, in 24-83 fathoms. (Numbers 27-29. 
e.—A large collection from Stellwagen’s Bank, situated in 
Massachusetts Bay, north of Cape Cod, in 22 to 44 fathoms. 
(Numbers 32-35.) 
3. Inshore, mixed bottoms. 
a.—A small collection made, in 6 fathoms, inside of Baker's 
Island, Salem Harbor. ber 26. 
b.—Another from 29 fathoms, off Marblehead. (Number 25.) 
Fauna of the Muddy Bottoms. 
The collections dredged from the muddy bottoms examined 
eae | these cruises show a fauna essentially identical with 
that described in the previous papers of this series as obtained 
in 1872 by Messrs. Packard and Cooke, from muddy bottoms 
in 85 to 150 fathoms, near St. George’s Bank, and lkewise n 
the Gulf of Maine; and also with those dredged during the 
past season by our own party, off Casco Bay, from similar 
depths. The same fauna was also met with by our parties 10 
the deeper parts of the Bay of Fundy, in 1868, 1870 and 1872; 
and also in the Gulf of St Lawrence by Mr. Whiteaves. 
Nevertheless, each different region explored presents some 
uliarities, or at least affords species that have not yet been 
ound in the other localities. Thus, during the past season 
* We have observed not only that the different thermometers will often not 
agree within several degrees when used together, but the same i : sec 
aot show the same amount of variation at different times, even under identi 
circumstances, when compared with a standard instrument. 
