356 



tral spines ; tarsal claws equal, rather small, those of hind tarsi not 

 more than half as long as fifth joint, no distinguishable tooth on inner 

 side of claws. Third vein to slightly more than two thirds the wing- 

 length ; first, to about three sevenths the length of third ; media fork- 

 ing at cross vein ; forking of cubitus appreciably beyond cross vein. 



Length, 2.5 mm. 



Type locality, Ithaca, N. Y., July 15, 1901 (O. A. Johannsen). 



7. Probezzia albiventris Loew 



Ceratopogon albiventris Loew, Berl. Ent. Zeitschr., 1861, p. 311, sp. 7. 

 Proheszia albiventris (Loew) Malloch, Proe. Biol. Soc. Wash., Vol. 27, p. 318. 



I have taken only a single female specimen of this species, — Ur- 

 bana. 111., July 7, 1914, at light, on store w^indow^ in town. 



The antenn?e are whitish yellow, darkened apically, and extended 

 backward would reach to middle of abdomen. The basal joint of hind 

 tarsus is slightly longer than the remaining joints combined ; the fifth 

 joint has two rows of ventral spines ; and the tarsal claws are long, 

 subequal, and have a distinct subbasal tooth. Third vein almost to 

 wing-tip ; first, short of middle of third ; media and cubitus both fork 

 before cross vein, the latter but slightly before it. 



Length, 3 mm. 



Originally described from Georgia, and subsequently recorded from 

 New^ Jersey by Smith. The male is undescribed. 



8. Probezzl\ elegans Coquillett 



Ceratopogon elegans Coquillett, Proe. U. S. Nat. Mus., Vol. 23, 1901, p. 599. 

 Probessia elegans (Coquillett) Malloch, Proe. Biol. Soe. Wash., Vol. 27, p. 138. 



The female of this species differs from the female of albiventris in 

 color as indicated in the key. In addition to this color difference the 

 antennae are comparatively shorter, the hairs on the disc of the mes- 

 onotum are more sparse and distinctly setulose, and the insect is more 

 slender and slightly smaller, being rarely over 2.5 mm. in length. 



The male differs from the female in the absence of the spines on 

 the ventral surface of the fifth tarsal joint ; in having the antennae with 

 long yellowish plumes and the antennal length one and a half times 

 that of head and thorax combined ; also in venation, the third vein ex- 

 tending to about three fourths of the wing-length, and the first extend- 

 ing to middle of third. 



Length, 1.5 mm. 



Illinois localities: Muncie, May 24, 1914; Monticello, June 28, 

 19 1 4, — (J. R. Malloch). Taken bv sweeping amongst vegetation 



