Review of Recent Geological Literature. 311 
REVIEW OF RECENT GEOLOGICAL 
LITERATURE. 
Ostracoda of the Basal Cambrian Rocks of Cape Breton; by G. F. 
Marrnpw LL.D. F. R. Sy G. 
In this article are described the Ostracoda that have been found 
in the Cambrian rocks of Cape Breton, Nova Scotia, older than the 
Paradoxides beds. 
These forms are referred to five genera of which three are new, 
viz: Bradoria (and subgenus Bradorona) Escasona and Indiana. 
Some species are referred doubtfully to Leperditia and Schmid- 
tella. Uhe new genera are based chiefly on peculiarities of the ocular 
tubercle and adductor muscle scar, as well as on the form.. Fifteen 
species and twelve mutations and varieties are enumerated. These 
are scattered thro’ the Coldbrook and Etcheminian terranes (forming 
the Basal Cambrian). A table is given showing the distribution, from 
which it appears that the subgenus Bradorona and the genus Escasona 
chiefly characterize the Lower Etcheminian, while Schmidtella (?) 
and Bradoria are more common in the Upper Etcheminian fauna. 
Only two ostracods have been found in the lowest Cambrian 
terrane (Coldbrook) a species of Indiana and one of doubtful affin- 
ities. 
The Etcheminian genera are notable for the approximation ot 
the adductor muscle to the anterior end of the cardinal line; and 
usually for the possession of an ocular tubercle above and close to the 
muscle scar. The scar-and sulcus common in the middle of the 
va've of many Ordovician Ostracoda are wanting in the genera dis- 
cussed in this paper. 
Many of the species are notable for their unusual width, this being 
frequently equal to the length, and sometimes exceeding it. 
Two plates of figures of the several new species and mutations ac- 
company this article. 
A Geological Study of the Fox Islands, Maine; by Gro. O. SmirTH. 
(Colby College Bulletin, Vol. 2, No. 1.) April, 1902, pp. 53, price 
50 cents, in paper covers. ; 
The state of Maine is almost a terra incognita so far as its geol- 
ogy is concerning. It is therefore particularly interesting to know 
that the report on the geology of Fox Islands, off the Maine coast, has 
recently appeared as one of the Bulletins of Colby College. The study 
Was first privately published in a limited edition by the author, Dr. 
G. O. Smith, in 1896, as a thesis for the Ph, D. degree at the Hopkins. 
The present paper differs from the earlier one in containing a fuller 
discussion of the general geology of the district and a much briefer 
