464 GEOLOGICAL SURVEY OF NEW JERSEY. 
B. Baileyi, W. Sm. 
Marine. Monmouth: Occasional on alge and in marine 
mud. Shark River, Manasquan River, and Shrewsbury River ; 
fossil in Ocean Beach elay. Atlantic: Atlantic City. 
B. levis, Ehrb. 
Marine. Atlantic: Occasional on alge and piling at Atlantic 
City. Monmouth: Fossil in Ocean Beach clay ; abundant on 
piling in Shrewsbury River. 
B. pulchella, Gray. 
Marine. Common on alge and in salt-water mud. Mon- 
mouth: Manasquan River, Shark River, Shrewsbury River ; 
fossil in Ocean Beach clay. Cape May. Atlantic: Atlantic 
City. 
B. Rhombus (Ehrb.), W. Sm. 
Marine. Common in marine mud. Monmouth: Manasquan 
River and Shark River ; fossil in Ocean Beach clay. 
B. turgida, W.Sm. (Cerataulus turgidus, Ehrb.) 
Marine. Rare in marine mud. Monmouth: Shark River 
and Manasquan River ; fossil in Océan Beach clay. 
TRICERATIUM, Brightwell. 
T. alternans, Bailey. 
Marine. Occasional in marine mud. Cape May. Monmouth: 
Manasquan River and Shark River ; fossil in Ocean Beach clay. 
T. favus, Ehrb. 
Salt or brackish water. Camden: Occasional in Delaware 
River mud as far north as Camden; not uncommon in Camden 
water-supply. Monmouth: Fossil in Ocean Beach clay ; com- 
mon in marine or brackish mud from Shark River and Mana- 
squan River. Atlantic: Atlantic City. Cape May: Dennis 
Creek and Cape May. 
T. punctatum, Brightw. 
Marine. Generally distributed along the coast—Lewis. 
T. undulatum, W. Sm. 
Marine. Camden: Rare in Delaware River mud—Lewis. 
