No. 6.— Reports on the Results of Dredging, under the Supervision 
of ALEXANDER AGASSIZ, in the Gulf of Mexico (1877-78), and 
in the Caribbean Sea (1879-80), and along the Atlantic Coast 
of the United States (1880), by the U. S. Coast Survey Steamer 
“ Blake,” LievT.-COMMANDER C. D. SiGsBeE, U.S. N., and Com- 
MANDER J. R. BaRTLeTT, U.S. N., Commanding. 
[Published by Permission of Cartiste P. Patterson and J. E. Hinearp, Super- 
intendent of the U.S. Coast and Geodetic Survey. ] 
XXXIV. 
Report on the Mollusca dredged by the ‘‘ Blake” in 1880, including Descrip- 
tions of several new Species. By KaTHaRINE JEANNETTE Bus. 
Tuis collection, although a small one, is of considerable interest, ow- 
ing to the fact that it contains a number of very beautiful, and hitherto 
undescribed species, and also because the range of many of our Northern 
forms is extended much farther south. 
There were about fifty small jars and bottles of unassorted material 
from thirty-two stations off the coast included between George’s Bank, 
N. Lat. 41° 35! 15, W. Long. 65° 51! 25", and Charleston, South Car- 
olina, N. Lat. 32° 25’, W. Long. 77° 42/ 30”, ranging in depths from 24 
to 1,394 fathoms. These stations are mostly in depths between 100 
and 1,000 fathoms, there being but six in less than 100 fathoms, and 
six below 1,000 fathoms. 
Of the eighty-six species found, about thirteen are named and de- 
scribed as new, and five others, although supposed to be undescribed, 
are so badly worn and broken that they are only worthy of brief men- 
tion. 
All the specimens have been carefully compared with the types or 
typical forms in the collection of the U. 8. Commission of Fish and 
Fisheries. 
References are only given to those species included in Professor Ver- 
rill’s catalogues of deep-water Mollusca (Transactions of the Connecti- 
VOL. XXIII. — NO. 6. 
