1889. ] NEW YORK ACADEMY OF SCIENCES. 177 
The following paper was read by title:-— 
A REVISION OF THE EDENTULOUS GENERA OF CURIMATINZ. 
BY CARL H. EIGENMANN AND R. 8. EIGENMANN. 
It is published in the ANNALS, Vol. IV., No. 12. 
THE PRESIDENT remarked upon some choice and interesting 
minerals which had been sent him from Colorado, and exhibited 
specimens, particularly one of wulfenite, with crystals of extra- 
ordinary size and beauty. 
The first paper assigned for the evening was then read, en- 
titled 
REMARKS ON RECENT DISCOVERIES IN LOCAL CRETACEOUS AND 
QUATERNARY GEOLOGY. 
BY EN. Gy BRIETON, 
The following notes have not been obtained in any systematic 
study of the strata involved. They have been made from time 
to time, and are offered now as only supplementary to former 
contributions, 
CRETACEOUS. 
Fossil-bearing Concretions in the Plastic Clay Series. 
For a number of years, Mr. Hollick and myself have been 
noting with considerable interest and curiosity a great abun- 
dance of ferruginous clayey concretions on the shore of Raritan 
Bay, near the extreme southern end of Staten Island, at Totten- 
ville. ‘hey occur scattered along the beach for half a mile or 
more, and are most abundant at the base of the high bluff just 
south of the old Billop House of Revolutionary fame. Here we 
have seen them weighing over a hundred pounds, and sometimes 
three feet in diameter and four inches or more in thickness. 
Mr. Hollick first noticed that certain of these concretions con- 
tained vegetable impressions, and described them in the Pro- 
ceedings of the Natural Science Association of Staten Island, of 
December 8th, 1883, noting their similarity to those formerly ob- 
tained by Mr. Bailey Willis under quite similar conditions on 
the shore of Hempstead Bay, at Dosoris Island, near Glen Cove, 
L. I." Since that time, a considerable number of specimens of 
leaves and fruits have been thus obtained, all of which have been 
‘See TRANSACTIONS of this Academy, VI., 16 (1886), and Merrill in 
ANNALS, ITI., 345 (1886). 
