CATALOGUE OF PLANTS. 399 



BULBOCHuSEJTE, Ag. 

 B. intermedia, De By. 



Common in ponds and sluggish waters. 

 B. crenulata, Prings. 



Frequent in similar localities. 

 B. setigera (Roth), Ag. . 



In pine-barren regions. 

 B. Brebissonii, Kiitz. 



Atlantic : In a pond at Hammonton. 

 B. mirabilis, Wittr. 



In ponds. 

 B. nana, Wittr. 



Frequent in ponds. 

 B. insignia, Prings. 



Morris : Lake Hopatcong. 

 B. minor, A. Br. 



In ponds. 

 B. repanda, Wittr. 



Morris : Lake Hopatcong. 

 B. rectangularis, Wittr. 



Not rare in ponds. 



SPILEKOPLEJE. 



OYLINDROOAPSA, Reinsch. 

 O. geminella, Wolle. 



In ponds ; not frequent. 



VOLVOCINE^E. 



VOLVOX, L. 

 V. globator, L. 



In ponds. Essex: Newark; probably frequent. Camden: 

 Martindale. 



V. stellatus, Ehrb. 



Union : In ponds about Plainfield. 



