1884. ] Invertebrate Paleontology for 1883. 391 
zontology in a very useful form. In his preliminary remarks, Dr. 
White calls attention to his original view of the origin of non- 
marine mollusks, through the land-locking of marine types, and 
derives our present non-marine fauna of the Mississippi drainage 
system directly from the fauna of the old Laramie sea. In the 
Proceedings of the U.S. National Museum, Vol. v, pp. 94-99, 
Dr. White published, “ New molluscan forms from the Laramie 
and Green River groups, with discussion of some associated forms 
heretofore known,” illustrated by two plates, Nos. rm and Iv; 
these descriptions already appeared in his review of the non-marine 
fossil mollusca of North America. In the same publication, pp. 99- 
102, he has also “ The molluscan fauna of the Truckee group, in- 
cluding a new form,” illustrated by one plate, No. v; this also 
appeared in the review of non-marine mollusca. 
J. F. Whiteaves, in the Canadian Naturalist and Quarterly Jour- 
nal of Science, Vol. x, new series, No. 7, published a note on the 
“Occurrence of Siphonotreta scotica (Davidson), in the Utica 
formation, near Ottawa, Ontario.” This paper was read before 
the American Association for the Advancement of Science, Mon- 
treal, 1882. 
R. P. Whitfield, in the Amer. Journ. of Science, for May, pub- 
lished “Observations on the fossils of the metamorphic rocks of 
Bernardstown, Mass.” 
H. S. Williams read before the American Philosophical Society, 
April 2oth, 1883, a paper on “A crinoid with movable spines.” 
In the Proceedings of the Academy of Natural Science of Phila- 
delphia, Part 1, 1882, p. 17, Professor Williams published “New 
crinoids from the rocks of the Chemung period of New York 
State,” illustrated by one plate, No.1. In the Amer. Journ. of 
oe for February, Professor Williams published a paper on the 
F; auna at the base of the Chemung group in New York,” in 
no he gives a list of species found at High Point, Naples, 
iX and comments on their similarity to the fauna of Lime 
creek, Towa, referring it to the Kinderhook group, and argues 
a they are equivalent, and that as long as the Chemung is to 
retained in the Devonian, the western beds should also be re- 
- Calvin’ as Devonian; he has apparently overlooked Professor 5. 
nn’s 
article in the Amer. Journ. of Science, 1878, Vol. XV, P- 
Which the species mentioned are recorded as occurring 
at the base of the Devonian in Iowa, showing them to have 
