48 CRETACEOUS PALEONTOLOGY. 



gothy. The lowest bed exposed in this section (loo 1 ), is five feet 

 of gray or variegated sand containing thin bands of lignite. 

 Locally the uppermost six inches of this sand is indurated and 

 forms a hard band of ferruginous sandstone. This sand is the 

 uppermost portion of the Magothy, and its total unexposed 

 thickness at this locality is not known. 



Locality ioo 2 . This bed represents the basal member of the 

 Merchantville clay in the locality under consideration, and no 

 extensive fauna has been found in it. It consists of two feet of 

 dark glauconitic clay with numerous, irregtilar, ferruginous con- 

 cretions. In the pits not operated at the present time, north of 

 the Pennsylvania Clay Company's plant, an abundance of shark's 

 teeth of several species occur weathered out upon the slope just 

 below this portion of the section, along with an occasional frag- 

 ment of a reptile bone. In the sides of a trench dug in this bed 

 at the pits now being operated, an undetermined species of 

 Corbula was collected, along with several shark's teeth of the 

 same forms as those found loose, and a fish vertebra. 



Locality ioo 3 . This bed, 25 feet in thickness, is a black clay 

 free from glauconite, but with some arenaceous bands, being dug 

 at the present time in the Pennsylvania Clay Company's pits for 

 use in the manufacture of bricks. Fossils are exceedingly rare, 

 only a single specimen of Inoceramus proximus Tuom. being 

 observed. 



Locality ioo 4 . Overlying the bed of black clay is a much 

 weathered glauconitic bed of a brownish or yellowish color. Fos- 

 sils are not uncommon in this bed, but they are poorly preserved 

 because of their weathered condition. The species which have 

 been identified are as follows : 



Cucullaea antrosa Mort. 

 Axinea subaustralis d'Orb. 

 Liopistha alternate, n. sp. 

 Htea trapezoidea (Con.). 

 Cardium spillmani Con. 

 Cardium tenuistriatum (Whitf.). 

 Protocardia ferseyensis n. sp. 

 Panopea decisa Con. 



