CATALOGUE OF INSECTS. 621 



C. niveipila O. S. Staten Island, V, on young leaves of the red oak (Bt), 

 Riverton, VI. 



O. carbonifera O. S. Common in August on leaves of golden rod, Solidago 

 (Bt). 



C. viticola O. S. Bergen County on leaves of wild grape (Bt), Vincentown 



(USAg). 



C. vitis-pomum Walsh and Riley. Riverton, on wild grape, Atlantic City 

 (Nell), Fort Lee (Bt), Lahaway, New Brunswick and elsewhere, common 

 early in the summer (Sm). 



C. impatientis O. S. Succulent swellings at the base of the flowers of 

 Impatiens fulva, Englewood, VIII (Bt). 



C. vaccinii O. S. Large cockscomb-shape galls on leaves of the huckleberry, 



Vaccinium, Dover, Morris Plains, Clementon. 



DIPLOSIS Loew. 



[See Figs. 292, 293 and 294, next page.] 



D. tritici Kirby. Was reported as injuring wheat in Mercer, Warren and 



Sussex Counties during the season of 1889 (Sm). 



D. pini-inopsis O. Sacken. Jamesburg, V, on scrub pine, Finns inofis (Sm) 

 Riverton, VII, 30, IX, 17. 



D. pyrivora Riley. The "pear midge." Infests pears, causing an irregular 

 lumpy growth, the larv;e eating out the core ; cultivate frequently in 

 early summer and, on light soil, put on a heavy top dressing of kainit 

 middle of June. 



LASIOPTERA Meigen. 



L. vitis O: Sacken. Swellings of the stems and leaf stalks of wild grape, 

 Shiloh, Riverton, Irvington (U S Ag). 



L. farinosa O. S. Makes galls on the shoots of blackberry : local in Atlantic 

 County, and not injurious. 



Family MYCETOPHILIDiE. 



These are fungus-gnats, also resembling mosquitoes or midges, but the 

 antennae are not verticillate or furnished with whorls of hair. In the male the 

 I abdomen ends in a forceps-like process, and in the female in a pointed ovi- 

 oositor. There are other structural differences to characterize the family, but 

 :hese are not easily seen except by the student. The larva are feeders in 

 ungus and in decaying vegetation generally, and might be considered at worst 

 aarmless were it not that they attack cultivated mushrooms. The larva are 

 white, slender, have a black head, and often live in large colonies Some of 



