1880.] 



NATURAL SCIENCES OF PHILADELPHIA. 



29 



peake, near " Beckett's," about twenty-eight miles south of Fair 

 Haven : 



Feet in Thickness. 



5 

 3 



Sand, without shells. 



Sand, with innumerable shells. 



20 



Mingled sand and clay, without fossils, or very rare. 



Same as below, less numerous. 



Sand and clay, with a group of shells like that at Hance's. 



The sliells obtained at Hance's, about four miles further north, 



were the following 



Bivalves. 



Astarte varians, 

 " exaltata, 

 Artemis acetabulum, 

 Area subrostrata, 



" dipleura, 

 Cythcrea subnasuta, 

 Cardium leptopleura, 

 Crassatella melina, 

 Corbula idonea, 

 " elevata. 



Bivalves. 



Isocardia Markoei, 

 Lima papyria, 

 Lucina Foremani, 



" subplanata, 



" crenulata, 

 Pectuneulus lentiformis, 

 Venus latilirata, 



" Mortoni ? 



" staminea. 



Univalves. 



Bonellia lineata, 

 Cancellaria biplicifera, 



" engonata, 



Dentalium tlialloides, 

 Fissurella Marylandica, 

 Yoluta mutabilis, 

 Infundibulum perarmatum, 

 Mavginella perexigua, 

 Pleurotoma Marylandica, 



Univalves. 



Pleurotoma bellacrenata, 

 Scalaria pachypleura, 

 Solarium trilineatum, 

 Sigaretus fragilis, 

 Trochus peralveatus, 

 Turritella indenta, 

 " exaltata, 



" perlaqueata, 



Voluta solitaria. 



