THE INSECTS OE NEW JERSEY. 725 



M, nebulosa Coq. Clementon VI, 3, VIII, 9. 



M. hirsuta Loew. Dimnfield, Del. Water Gap VII, 11. 



M. inconcinna Loew. Orange Mts. VIII (Wdt). 



EUGNORISTE Coquillett. 

 E. occidentalis Coq. Trenton VIII, 3 (Hk). 



SCIARA Meigen. 



S. fulvicauda Felt. Types, Atlantic Co., from decaj-ed blackberry roots 



(Sm). 

 S. pauciseta Felt. New Brunswick, types from decaying potatoes IX 



(Sm). 

 S. multiseta Felt. New Brunswick, types bred from mushrooms V, and 



this is the common species in mushroom cellars with us (Sm). 

 S. polita Say. Clementon V, 30. 

 S. inconstans Fitch. Newark, New Brunswick VIII, 7 (Coll); Riverton 



II, 26, Clementon VI, 3. 

 S. abbreviata Walk. Anglesea VII, 12 (Sm). 

 S. fuliginosa Fitch. Palisades (Lv) ; N. Woodbury VI, 17, lona VI, 2 



(Dke). 

 S. femorata Say. Fort Lee IV, V (Lv). 



HESPERODES Coquillett. 

 H. johnsoni Coq. Delaware Water Gap VII, 12. 



Family CECIDOMYIIDyE. 



Small, slender, mosquito-like flies with broad wings, long slender an- 

 tennae with cylindrical or bead-like joints, the males often with whorls 

 of long hair on the segments, whence they are known as verticillate. On 

 the whole the insects are fragile in appearance, slow in flight, and they 

 are popularly known as "gall-gnats" or "gall-midges," because the larvae 

 of many species produce abnormal growths or galls on a great variety of 

 vegetation. These larvae are small, elongate-oval legless grubs, bluntly 

 pointed at both ends, often with a chitinous process, known as a breast- 

 bone, on the under side, near the anterior end. 



Some of the species belonging here are among the most destructive of 

 those in the order, and the injury caused by them is of the most diverse 

 character. In some cases there is a true, gall-like swelling of the tissue; 

 in others it is a characteristic crippling or folding of a leaf or of a grow- 

 ing tip, or even a mere swelling of the tissue. Some species produce no 

 visible swellings or distortions at all, and some feed in or on seeds, 

 causing rather a shrivelling than a swelling. Much attention has re- 

 cently been paid to these insects by Mr. William Beutenmuller, of the 

 American Museum of Natural History, who has been good enough to pre- 



