loo REPORT OF NEW JERSEY STATE MUSEUM. 



eggs in spring, many of the species developing several generations during 

 the season. The adults are attracted to light, and many thousands are 

 sometimes found in the globes of electric lamps near cities and towns; 

 but we have not found it practical to prevent injury by thus trapping them. 



Remedial measures are, in general, cleaning up the rubbish in which 

 they hibernate, capturing them on sticky surfaces, and spraying with 

 some contact insecticide. The first method needs no explanation. Cap- 

 turing on sticky surfaces is much resorted to in vineyards, sometimes 

 merely with palm-leaf fans coated with tar or "tanglefoot," sometimes 

 with elaborate screens run between the rows, the vines being jarred to 

 induce the insects to jump or fly. Persistently employed this method de- 

 stroys immense numbers, and if begun early in the season will secure 

 practical exemption in fall. 



Spraying is with either kerosene emulsion or fish oil soaps. The mix- 

 ture should always be made as strong as the foliage will stand, the spray 

 should be very fine and should be applied with as much force as possible 

 so as to reach the partly-grown insects which tend to crouch close to sur- 

 face among the plant hairs; and it is also desirable to keep the air about 

 the vines or plants filled with the fine mist so as to reach the adults that 

 tend to fly at the first disturbance. In general the toll exacted by these 

 leaf-hoppers is not appreciated by the agriculturist. 



Family TETTIGONIELLIDJE. 

 Sub-family TETTIGONIELLIN^. 



ONCOMETOPIA Stal. 



O. undata Fab. Riverton VII, 31 (Jn) ; Anglesea VI, 30 (Ss). 

 O. costal is Fab. G. d., throughout the U. S. east of the Rocky Mts. 



AULACIZES Am. et Serv. 



A. irrorata Fab. Palisades VIII, Staten Island X, Navesink Highlands 

 VIII (Ds); Jainesburg IX, 30 (Brb); Woodbury VI, 4 (Ss); Anglesea 

 V, 30 (Coll). 



A. guttata Uhl. New York to Florida and sure to occur in New Jersey. 



KOLLA Dist. 



K. bifida Say. Madison (Pr); Palisades VIII, 21, Staten Island VIII, 7 

 (Ds); Jamesburg X, 2 (Coll); Riverton IX, 11 (Jn). 



TETTIGONIELLA Jacoby. 

 T. tripunctata Fitch. Staten Island IX, 7 (Ds). 



T. gothica Sign. Staten Island VIII, 26, Jamesburg V. 25 (Ds); Lake- 

 hurst VII, 7 (Coll). "T. hieroglyphica Say" does not seem to occur 

 east of Illinois. 



D1EDROCEPHALA Spin. 

 D. cocci nea Forst. More or less common throughout the State, VI-X. 



