188 STATE BOARD OF AGRICULTURE. 



HALIPLUS Latr. 



H. fasciatus Aube. Madison, V, 19 (Pr), Ft. Lee district, VI (Bt), Orange, 

 VI, Spring Lake (Ch), Camden (Li), Camden, Gloucester County (W). 



H. punctatus Aube. " New Jersey "(DSNM). 



H. triopsis Say. Orange Mts. ( Bf ), " New Jersey " (Roberts). 



H. ruficollis DeG. Ft. Lee district, VI (Bt), g. d. (Li, W): all the species 

 live in stagnant pools. 



CNEMIDOTUS Er. 



C. 12-punctatus Er. Occurs throughout the State in pools of stagnant water, 

 spring and fall. 



O. edentulus Lee. Spotswood (Bt), "New Jersey" (Roberts). 



Family DYTISCIDiE. 



" Water tigers, " or "predaceous diving beetles." Oval and somewhat flat- 

 tened, with rather short, stout swimming legs, the anterior much the shortest, 

 antennae slender and filiform. The larvae are also aquatic and predatory and 

 to them the term " water tigers " is more particularly applied. They are inter- 

 esting in structure and habits, but of no importance economically. 



OANTHYDRUS Sharp. 

 C. bicolor Say. Anglesea (IV). 



HYDROCANTHUS Say. 



H. iricolor Say. Ft. Lee district (Bt), Newark (Soc), g. d. (Li), "New 

 Jersey" (USNMi. 



LACCOPHILTJS Leach. 



L. maculosus Germ. Madison, V, 8 (Pr). Greenwood Lake, Ft. Lee district 

 (Bt), Caldwell (Cr), Newark (Soc), Spring Lake (Ch), g. d. (Li), Staten 

 Island : all the species occur in pools and flowing water. 



L. proximus Say. Ft. Lee district ( Bt), " New Jersey " (Roberts, USNMi. 



L. fasciatus Aubi'. Throughout the State in spring. 



L. undatus Aube. Madison, V, 10 (Pr), Ft. Lee district (Bt), " New Jersey " 

 (Roberts, U S N M). 



