192 STATE BOARD OF AGRICULTURE. 



ACILIUS Leach. 



A. semisulcatus Aube Madison (Pr), Caldwell (Cr), Ft. Lee in quarry 



holes, VII, 26 (Bt), Newark. 

 A. fraternus Harr. Madison (Pr), Staten Island (Lg), Anglesea (Li). 

 A. mediatus Say. Hopatcong (Pm), Ft. Lee (LI), in quarry holes (Bt), 



Camden, Gloucester, Atlantic County (W), seashore (Li). 



THERMONECTES Esch. 



T. basilaris Harr. Ft. Lee district (Bt), g. d. (Li). 

 var intermedins Cr. Newark (Bf). 



G-RAPHODERUS Esch. 



G-. liberus Say. Madison (Pr), Newark (Soc), New Jersey (Roberts, U S 



N M). 

 G. fasciaticollis Harr. Fort Lee (Bt), "New Jersey" (U S N M), Newark. 



CYBISTER Curt. 



C. fimbriolatus Say. Caldwell (Cr), New Jersey (Roberts, U S N M), 

 Newark, Anglesea. 



Family GYRINIDiE. 



" Whirligig beetles,''' 1 so named from their habit of swimming about in groups 

 or swarms on the surface of ponds or quiet streams and ditches, the individuals 

 whirling round and round without apparent aim. They are black or a little 

 bronzed, convex above, flattened below, with short, paddle-like swimming legs, 

 the anterior pair long and arm-like. They as well as their larvse are predatory, 

 and of no economic importance. 



G-YRINTJS Linn. 



G. rockinghamensis Lee. Hopatcong (Pm), Atco (Li), Atlantic Co. ( W), 



Ocean Co., everywhere common. 

 G. limbatus Say. Atco, Egg harbor I Li ) . 



G. dichrous Lee. Lake Hopatcong (Pm), " New Jersey " (DSNM). 

 G. ventralis Kirby. Orange (Ch), g. d. (Li), "New Jersey" (U § N M). 

 G. afflnis Aube. " New Jersey " (U S N M). 

 G. analis Say. Spring Lake (Ch), Atlantic Co. (W), Lahaway, V, 28. 



G. borealis Aube. Madison (Pr), Atlantic Co. (W), Lahaway, V, 28, James- 

 burg. 



G. lugens Lee. Atco (Li). 



