1881. ] the United States for the year 188o. 275 
ten, and Dr, Barrois’ review of the same has already been no- 
ticed. 
It is expected that Part 1, of Vol. v, will soon be issued, and Vol. 
v1 is also well in progress, thirty-nine of the plates being already 
engraved. During the past year Professor Hall has published, 
under the title “Corals and Bryozoans of the Lower Helderberg 
group,” a pamphlet of thirty-eight pages, referring to twenty-two 
of the plates of Vol. v1, which volume is to be especially rich in 
those forms. He informs me that he has in preparation a supple- 
‘ment to Vol. v, Part 11, for which there are already sixteen plates 
engraved. He also published, in the December, 1880, number of 
Science, a “Note on the relations of the Oneonta and Montrose 
sandstones of Vanuxem, and their relation to the sandstones of 
the Catskill mountains,” which, although mainly geological, is 
still of considerable palzontological interest. Professor Hall states 
that the Oneonta sandstone is not a part of the Chemung group, 
as has been supposed, but that it constitutes a separate series of | 
strata, the true position of which is between the Hamilton and 
Chemung groups, and expresses the opinion that those strata were 
deposited under “estuary and fresh-water conditions.” He regards 
those shells which characterize these strata, and which were 
described by Vanuxem as Cypricardites cattskillensis and C. 
angusta as belonging to the genus Anodonta. 
Professor A. Hyatt has nearly completed his illustrated memoir 
on the Ammonites of the Lower Lias, which is to be published 
_ by the Museum of Comparative Zodlogy at Cambridge, Mass. 
Dr. G. Hambach has an interesting “Contribution to the Anat- 
omy of the Genus Pentremites, with Description of New Spe- 
cies,” in Vol. 1v, Transactions St. Louis Academy Science, pp. 
145-160, with two lithograph plates. He has in hand a mono- 
graph of all the known American and European forms of the 
Blastoidez. 
The appointment of Mr. Angelo Heilprin as Professor of In- 
vertebrate Paleontology at the Academy of Natural Sciences of 
Philadelphia is a gratifying indication of progressive spirit in 
that well-known institution. In Vol. m1, of the Proceedings of 
the U, S. National Museum, is to appear an article from his pen 
entitled, “On some New Species of Eocene Mollusca from the 
Southern United States,” embracing pages 149-152, and accom- 
panied with one plate of illustrations. -He has also prepared an 
