CATALOGUE OF PLANTS. 463 



M. granulata (Ehrb.), Ralfs. 



Fresh water. Common in ponds and ditches. Gloucester: 

 Mullica Hill. Atlantic : Mays Landing. Monmouth : Ocean 

 Beach. Burlington : Marlton. Camden : Kirkwood and Black- 

 wood. 

 M. nummuloid.es (Bory), Ag. 



Salt or brackish water. Abundant on algae or attached to 

 piling. Atlantic : Atlantic City. Monmouth : Shrewsbury 

 River, Manasquan River, Shark River. Ocean : Barnegat Bay. 



M. punctata, W. Sm. (Orthosira.) 



Fresh water. Monmouth : Occasional in a brook emptying 

 into the south side of Shark River. 



M. sulcata (Ehrb.), Kiitz. 



Marine. Common in marine mud. Monmouth : Manasquan 

 River, Shark River; fossil in Ocean Beach clay. Atlantic: 

 Atlantic City. Cape May : Cape May and Dennis Creek. 



M. varians, Ag. 



Fresh water. Very common in brooks and ponds. 



PODOSIRA. 



P. compressa, West. (Druridgia geminata, Donkin.) 



Marine. Monmouth : Occasional in mud at the mouth of 

 Shark River. 



P. hormoid.es, Mont. 



Marine. Generally distributed along the coast Lewis. 

 P. maculata, W. Sm. 



Marine. Rare in Delaware River mud Lewis. 



The names which the last three species should bear under 

 Melosira are uncertain. 



BIDDULPHIE^E. 







BIDDULPHIA, Gray. 

 B. aurita (Lyngb.), Breb. 



Marine. Occasional in marine mud. Monmouth : Shark 

 River, Manasquan River, and Shrewsbury River ; fossil in 

 Ocean Beach clay. Atlantic : Atlantic City. 



