95 
(Bulletin of the ^Natural History Society, 
Bay of Fundy and Gulf of Maine, and St. George’s Bank. 
The Acadian fauna occupies all the southern part of the Gulf 
of St. Lawrence, probably parts of the southern shore of 
Newfoundland, the shores of Nova Scotia, all the Bay of 
Fundy, except the deep Syrtensian area at its mouth, all the 
coast to Massachusetts Bay, and here it begins to mingle with 
the southern fauna, named by LiUken the Virginian. South 
of Cape Cod the latter entirely replaces it, with the exception 
of Nantucket Shoals, which are still occupied by the Acadian, 
and a bank off the coast of New Jersey, where the last traces 
of the latter are found. 
The Acadian fauna, however, is not, so to speak, homo- 
geneous. It has been clearly shown that certain portions of 
it belong more nearly to the Virginian than the Acadian 
regions. This is the case with a large proportion of the forms 
in the great shallow southern basin of the Gulf of St. Law- 
rence, at certain sheltered and isolated points on the Atlantic 
coast of Nova Scotia and in a portion of Casco Bay, Maine. 
The fauna upon our North Shore is decidedly more ^southern 
than that in the Bay of Fundy, and a sub-division of the 
Acadian fauna would seem to be possible, though these 
more southern assemblages may also be considered simply as 
Virginian outliers. The causes determining this curious 
distribution of faunae are purely physical, and have already 
been discussed by the writer before this Society. 
Harvard University, Cambridge, Mass., 
February 4tb, 1888. 
II. BIBLIOGRAPHY. 
It is thought that the following list includes all works and 
papers of importance which relate to New Brunswick Echino- 
dermata. Only the most important, most generally useful, i 
and most easily accessible structural or systematic works are ; 
given; reference to them will show the student bibliographies 
of others of like character. A few popular works, such as ! 
those of Forbes (A), and Agassiz (K), have been introduced on 
account of the exceptionally interesting way in which they [' 
