OF WASHINGTON. 85 



Malacomyza farinosa, n. sp. (PL VII, fig. n). 



Head brown, small; antennae pale yellowish brown, of about 26 joints; 

 thorax brown; abdomen yellowish; legs pale brownish, mealy, hind 

 tibia barely swollen, one-fourth longer than femur, tarsi long. Wings 

 pale, mealy, minutely ciliate on margins, venation of fore wing as 

 figured; the cross-vein between cubitus and median more than its 

 length in front of the fork of median; forks of radial sector fully as 

 long as discal cell. The hind wings are long and reach much beyond 

 discal cell of fore wings; the median vein is not forked; the radial 

 sector is forked only near tip, so that the pedicel from discal cross-vein 

 is twice as long as the fork. 



Length, 2.7 mm. 



One female from San Mateo Co., Cal. (Baker). Readily 

 known by short fork of radial sector in hind wings. 



CATALOGUE. 



Genus CONIOPTERYX Curtis. 



C. vicina Hagen, Syn. Neur. N. Amer., p. 197, 1861. 

 C. angustus Banks, n. sp. 



Genus PARASEMIDALIS Enderlein. 

 P. flaviceps Banks, n. sp. 



Genus CONWENTZIA Enderlein. 

 C. hageni Banks, n. sp. 



Genus ALEUROPTERYX Low. 

 A. walshi Banks, n. sp. 



Genus MALACOMYZA Wesmael. 



M. westwoodi Fitch, First Rept. Ins. N. Y., p. 98, 1856. 

 (Aleuronia.) 



M. fitchi Banks, Trans. Amer. Ent. Soc., XXII, p. 315, 1895. 

 (Coniopteryx.) 



M. farinosa Banks, n. sp. 



EXPLANATION OF PLATES. 



FIG. i. Aleuropteryx walshi: fore wing. 



2. Aleuropteryx walshi: hind wing. 



3. Conwentzia hageni: hind wing. 



4. Conwentzia hageni: fore wing. 



5. Coniopteryx vicina: fore wing. 



6. Malacomyza fitchi: fore wing. 



