160 BULLETIN OF THE BUREAU OF FISHERIES. 
Predominantly southern. 
Molgula manhattensis.......... Casco Bay to North Carolina. 
Stycla partitarte Wom ane. « : Massachusetts Bay to. North Carolina. 
Perophorarvinidis 36 32.00.04... Vineyard Sound to Beaufort, N. C., and Bermuda. 
A. pellseteaine opt gi2 £02k). tet: Vineyard Sound to North Carolina. 
Of uncertain position. 
Moleulaarenata. .).2)).. -/)2). 4). Long Island Sound to Nantucket. 
Didemnum lutarium........... New England coast south of Cape Cod. 
Amaroucium stellatum......... Vineyard Sound to North Carolina (?). 
A. pellucidum constellatum.... Isles of Shoals (?) and Gloucester to Cold Spring Harbor, Long Island. 
Thus, according to the information at our disposal, four of these eight species are 
to be regarded as predominantly southern, while the remaining four have only been 
authentically recorded from a very limited section of the coast. Only three species are 
known to occur north of Cape Cod. 
12PISCES. 
The group of fishes occupies a peculiar position in the present work. The total 
number of species iisted for this region is greater than that for any other group 
except the Crustacea. There are 247(+6 ?) species® representing 188(+2 ?) genera 
and 99 families. Only a very small proportion of these (30 species) have, however, 
been taken in the dredge, owing, first, to the fact that the great majority of 
the species do not ordinarily lie upon. the bottom, and, secondly, to the fact 
that even the largest dredges and trawls which were employed were not well 
adapted to retaining active fishes. In general, we may say that this Survey has 
dealt only incidentally with the fishes, since the latter do not, for the most part, 
belong to the benthos, any more than do the Medusz and free-swimming Crustacea. 
Our knowledge of the distribution of fishes within the narrow limits of such a small 
body of water, and of the causes determining this distribution, could be substantially 
increased only by the use of quite other implements than the dredge. As regards the 
catalogue, on the other hand, it seems likely that the list of local fishes as a whole is 
more complete than that of any other extensive group of organisms. And even our 
dredging has resulted in the capture of one fish which was not previously known south 
of Cape Cod. This was the little blennioid species, U/varia subbtjurcata. 
For the past 40 years Mr. Vinal Edwards, throughout the year, and various nat- 
uralists, during the summer months, have been engaged in an active search for new 
fishes. To the extraordinary zeal of Mr. Edwards and his rare power of observing 
small differences and recognizing unusual species has been due, in large measure, the 
completeness of our knowledge of local fishes. As early as 1873 Prof. Baird published 
a list of Woods Hole fishes, some of which had already been recorded for local waters by 
Storer many years before. This list has received continual additions from year to 
year in various publications of the United States Fish Commission. In 1898, Dr. H. M. 
Smith brought together all the previously published records relating to local fishes 
together with a latge number of additional ones, and piepared ele most complete list 
a Two species of Tae eenial have been included with the true fishes in this computation. 
