150 REPORT OF NEW JERSEY STATE MUSEUM. 



R. annulatus Reut. Madison (Pr) ; Riverton IX, 11 (Jn). 



R. inscriptus Kirby. Canada to Virginia. 



R. rufusculus Reut. Occurs from New York to Virginia. 



R. ferus Linn. Common throughout the State IV-XII, and the best known 



representative of this family. 



R. capsiformis Germ. Probably occurs in New Jersey. 

 R, kalmiae Reut. Occurs near the line in Pennsylvania. 

 R. roseipennis Reut. (punctipes Reut.) "New Jersey" (Reut). 

 R. propinquus Reut. New York and probably New Jersey (Bno). 

 R. vicarius Reut. Will probably be found in New Jersey (Bno). 

 R. assimilis Uhl. Ranges from Canada to Maryland. 



Family GERRID^E. 



This aggregation comprises the "water striders," "marsh treaders" and 

 other species that live in wet places or on the water surface. As a rule, 

 the body is narrow and elongated, covered with a velvety pile adapted to 

 shed or repel water. The legs are long and slender, and the insects are 

 adapted to move rapidly over the surface of the water, resembling spiders 

 when the legs are fully extended. They are predatory in habit in all 

 stages, and where they occur in numbers no Anopheles or other mosquito 

 larvae are able to maintain themselves. 



Sub-family VEUIN^B. 



RHAGOVELIA Mayr. 



R. obesa Uhl. Hewitt VII, Cranford VIII, Staten Island VII, VIII, Lake- 

 hurst VII, X (Ds); Bloomfield VI, Rahway River VIII, Lakehurst IX; 

 a very common species in swiftly running streams (Bno). 



MICROVELIA Westw. 



M. marginata Uhl. (capitata) Ft. Lee X, 10. Cranford VIII, 6 (Bno). 

 M. albonotata Champ. Westfield V, 3, VII, VIII, 13, Staten Island VII, 8 



(Bno); Riverton VIII, 3 (Jn). 

 M. americana Uhl. (Hebrus) Westfield VII, 4-IX, 2, Cranford VIII, 



Ft. Lee Dist. V, 28, IX, X, 10, Staten Island VI, 3, VIII, 19 (Bno). 

 M. boreale Bno. (pulchella Westw.) Westfield VI-IX, Bloomfield VI 



30, Cranford VIII, Ft. Lee Dist. VII-IX, Staten Island V-VIII (Bno). 



This is the species usually labelled "pulchella" in collections, but it 



is really a distinct form. 



Sub-family GERRIN^. 



This contains the narrower forms listed as Hydrobatidae in the previous 

 edition. 



