LEONARD HASEMAN. 323 



TRICHOMYIA. 



Members of this genus have but a single simple vein between the 

 forked radial sector and cubital; 15-jointed antennoc; third anal 

 vein not greatly reduced and with distinct ventral plate and ovipos- 

 itor. Kincaid's Sycorax lanceolata is clearly a Trichonnjia. In the 

 Kansas University collection the writer finds a new species of Tri- 

 chomyia, collected by Professor Snow in Arizona. Prof. F. L. 

 Washburn recently reported a Trichomyia from Minnesota,* but 

 he informs the writer that he is unable at present to locate eithei' 

 his specimens or authority. 



Trichomyia lanceolala Kincaid. 

 Sycorax lanceolata Kincaid, Entomological News, X. p. 35 (1899). 

 ''Female. — Body brown, clothed with brown hair which appears black iu some 

 lights. Wings extremely narrow, four times as long as broad, apex sharply 

 acuminate and pointed exactly at the tip of the simple nervure; anterior and 

 posterior bifurcations distant from the base of the wing respectively two-thirds 

 and one-third the wing's length ; veins unevenly clothed with brown hair, simi- 

 lar to that upon the body ; fringe very heavy, colored similar to the hair upon 

 the veins, on the posterior margin somewhat shorter; length of wing 2 mm. 

 Legs brown, clothed with brown liair, except on the basal joints of all the tarsi, 

 which are covered with white hair. Antennae short, stout, about three-fourths 

 as long as the width of the wing ; 15-jointed ; joint 1 cylindrical ; joint 2 globose, 

 larger than succeeding joints; joints 3-15 linear and sparsely clothed with brown 

 hair. Ventral plate elongate, broad at base and narrowed toward the apex, 

 which is bilobed and linearly emarginate." 



Hab. — Palo Alto and Santa Cruz Mountains, Califoi'uia, and 



Alraota, Washington. August 3rd to 9th. 



Trichomyia unipiinclata n. sp. 



Length of wing 2.5 mm.; breadth .45 mm.; anterior bifurcation 1.2 mm. from 

 tip; posterior furcation 1.5 ram. from tip; subcosta long, linked to costa on a 

 level with the apex of vein 10; vein 10 not reduced as in European Sycorar, 

 linked to wing margin about two-lifths the distance from base; wing long, slen- 

 der, narrowly rounded at tip of simple vein ; fringe broader at base, decreasing 

 toward tip; posterior much broader than anterior; breadth of posterior at base 

 of wing .75 mm. ; anterior scarcely .5 mm. ; fringes black, lighter toward base ; 

 tip of wing with tuft of long snow-white hairs, which, mounted in balsam, appear 

 banded ; veins rather densely clothed with closely applied dark, and erect, black 

 hairs; the latter collected in two distinct transverse bands, a broad one between 

 the bifurcations and a narrower one on a level with the apex of veins 3 and 6. 

 Antennse 15-jointed; basal segments larger than remaining; first cylindrical; 

 second spheroidal; 3-15 cylindrical, sparingly clothed with hair; some with con- 

 spicuous anuuli on their dorsal surface, making the antennse appear more than 

 15-jointed ; 1-2 clothed with white scales ; 3-4 sometimes with scales also ; length 



» Minn. Agr. Exp. Sta., Bull. 93, p. 35. 



TEANS. AM. ENT. SOC. XXXIII. OCTOBEK, 1907. 



