— i86 — 



HVDROCANI'HLS St7y. 



H. iricolor Sav. — Abuiidanl in W'oodside Lake (Slaleii Island) and elsewhere 

 near N. W Tily, al-o \. [., Pa., O.. (and (la., l.a., I'la.'). 



L.ACcopHU.rs Leach. 



L. maculosus Ct-n>i. — .\. I-',. .Vmn. in e\('i\ jiond, the most common 

 water-beetle. 



L. proximus Say. — Lake .superior Region. Not yet recognized in our ponds, 

 but occurs at reekskill (Sherman), also reported from N. ]., Can., O., Iowa, 111., 

 (also Tex., Fla., Neb. and Cal.). 



L. fasciatus Aube. — Occurs heic with /,. maculosus, but less common, also 

 found all over the United States. 



L. undatus Aube. — Xorthtield Iron Ore ponds iStaten Island), rare; also 

 N. I.. Pa. 



L. gentilis /.a.— N. V., la. 



HvDROv.\TUS Mots. 



H. cuspidatus Geim . — \"ery abundant on Staten Island, also in all Middle 

 and Western Stales. 



H. pustulatus Muls. — y.. ].. 111., Vt. 



D ES.M O V A C H R I A Bah. 

 D. convexa Aube. — N. V. City and vicinity. Common on Staten Island; 

 N. I., and Middle States. 



lin:)F.ssus Sharp. 



B. flavicollis Z<v. — 111.. Pa., (Crotch). 



B. affinis Say. — Our common species is called by this name, also reported 

 from the Atlantic Region, N. L, Ohio, Lake Superior, (also Tex., N. Mex., Cal. 

 and Vane). 



B. lacustris Sin-. — Rare near N. \'. City. Reported to inhaliit tlie .Xtlantic 

 Region, Ohio (Dury), Lake Superior. 



B. fuscatus Cr. — Lake Superior to Fla (Crotch). Found abundantly at 

 Peekskill, N. V., among submerged leaves in a wooded swamp (Sherman). 



B. granarius ^//</'^. — Rare on Staten Island N. J. (Smith). Vermont (Ro- 

 berts), Southern States (Crotch), 



(ki IXA .4uh('. 



C. angustata Aube. — \ery rarely found in the Iron Ore ponds on Staten 

 Island. Repoited from the Southern States (Crotch \ 



\ 





C'oKI.AMl'.US Thoiii. 



C. inaequalis /(////.—Near N. ^'. City, N. J., Middle and Western States, 

 Lake Supeiio], Can. (also Kuru|)e). 



C. punctatus .S',n'. — Near N. V. City, N. I. (Smith), Va., Middle and 

 Western States, Col. 



