140 STATE BOARD OF AGRICULTURE. 



BARCE Stal. 



B. annulipes Stal. "United States" (Uhler). 



B. simplicipes Uhl. '"Atlantic States" (Uhler). 



CERASCOPUS Heineck. 



C. errabundus Say. " Atlantic States " (Uhler). 



Family LIMNOBATIDiE. 



The "Marsh treaders." L,ive in wet places on the surface of water or on 

 mud-flats ; slender in body with a very long head and long legs. Our only 

 species is of no economic importance. 



LIMNOBATES Burm. 

 L. lineata Say. Madison (Pr), Camden (Ss), in December (Jn). 



Family HYDROBATIDJE. 



The "water striders " or "skaters." They are narrow bugs with long legs, 

 the body wider near the middle, which run rapidly on the surface of the water 

 in ditches, ponds, etc., preying upon whatever insects come into their way. 

 They are of no economic importance. 



HYGROTRECHTJS Stal. 



H. remigis Say. Camden, IV, 14 (Ss), Staten Island (Ds), Jamesburg, VIII, 2. 

 H. conformis Uhl. Morris County (Jn). 



LIMNOTRECHUS Stal. 



L. marginatus Say. Riverton, V, 1 (Jn), Merchantville, III, 30 (Ss), Madi- 

 son, common (Pr), Staten Island (Ds). 



LIMNOPORTJS Stal. 

 L. rufoscutellatus Latr. Madison, common (Pr). 



STEPHANIA White. 

 S. picta H. S. "United States" (Uhler). 



