422 GEOLOGICAL SURVEY OF NEW JERSEY. 



C. biretum, Breb. 



Bergen : In a sluggish stream near Closter Austin. 

 C. cselatum, Ralfs. 



Frequent in ponds. 

 C. Kjellmanii, Wille. 



Sussex : Wood Lake. 

 C. Blyttii, Wille. 



Sussex : Wood Lake and Long wood Pond. 

 C. supraspeciosum, Wolle. 



Frequent in ponds, northern parts of the State. 

 C. pectenoides, Wolle. 



Frequent in small ponds. 

 C. Turpinii, Breb. 



In ponds ; not rare. 



TBTMEMORUS, Ralfs. 



T. Brebissonii, Menegh. 

 Var. turgidus, Ralfs. 

 T. granulatus, Ralfs. 

 T. Isevis (Kiitz.), Ralfs. 



All these are frequent in ponds. 



T. xninutus, De By. 



In ponds ; occasional. 

 T. giganteus, Wood. 



Atlantic : Pond, Atsion. 



XANTHIDIUM, Ehrb. 



X. armatum (Breb.), Ralfs. 



Atlantic : In ponds, Hammonton and Pleasant Mills. 



X. aculeatum (Ehrb.), Breb. 



Morris : Lake Hopatcong. 

 X. cristatum (Breb.), Ralfs. 



Atlantic : Hammonton. 



