1895.) NEW YORK ACADEMY OF SCIENCES. 13 
J 
3. Urosalpinx cinerea Stm. 
4. Odostomia trifida Gould. 
5. Turbonilla interrupta Ad. 
6. Crepidula fornicata Lam. 
€ x convexa Say. 
8. Ensatella Americana Ver. 
9. Venus mercenaria Linn. 
10. Scapharca transversa Ad. 
11. Modiola hamatus Ver. 
12. Cumingia tellinoides Con. 
13. Astarte castanea Say. 
14, ‘¢  quadrans Gould. 
crustacea, etc. 
P Balanus eburneus Gould. 
Panopeus? Claws. 
Over the Serpula bed is a layer of compact clayey sand con- 
taining Ostrea Virginiana and small specimens of Arca pexata. 
The upper shell bed consists of coarse beach sand with pebbles, 
slightly intermixed with clayey matter, and afforded the follow- 
ing shells: 
Ilyanassa obsoleta Stm. 
Crucibulum striatum Ad. 
Crepidula fornicata Lam. 
Ceronia arctata Ad. 
Venus mercenaria Linn., very abundant. 
Cyclocardia Novangliz Morse. 
Scapharca transversa Ad. 
Astarte undata Gould. 
“¢ _castanea Say. 
Ostrea Virginiana Lister. 
The uppermost fossiliferous stratum which I have called the 
fragment bed, but which Mr. Scudder has included with the 
upper shell bed, consists of white quartz sand and pebbles with 
a great abundance of comminuted shells. It contains a small 
proportion of clayey matter but differs very much from the 
upper shell bed, both by the condition of the fossils and by 
the entire absence of any ferruginous matter. In this layer I 
found the following species: 
. Ilyanassa obsoleta. Stm. 
. Lunatia heros Ad. 
. Skenea planorbis. 
. Margarita obscura Gould, fragments. 
. Rissoa aculea. Stm. 
a me CO bo ee 
