226 NEW YORK STATE MUSEUM 



a little longer and broader. Ovipositor, terminal lobes short, broadly 

 oval. Other characters about as in the male. Type Cecid. 0.1^62. 



Trishormomyia incisa n. sp. 



This form was taken in a trap lantern at Nassau, N. Y., July 8, 

 1906. 



Male. Length 4 mm. Antennae nearly as long as the body* 

 thickly haired, pale yellowish tinged with carmine apically, yellowish 

 basally; fourteen segments, the fifth with stems one and one-half 

 and two and one-half times their diameters; terminal segment some- 

 what produced, the distal enlargement broadly oval, irregular. 

 Palpi; the first segment oval, the second moderately stout, with a 

 length four times its diameter, the third as long as the second. Face 

 fuscous yellowish. Mesonotum pale 3'ellowish, irregularly tinged 

 with carmine anteriorly and laterally. Scutellum fuscous yellowish 

 with sparse apical setae, postscutellum a little darker. Abdomen 

 pale reddish, darker basally, the segments dorsally tinged with 

 fuscous; genitalia yellowish and dark carmine, thickly setose. Wings 

 hyaline, costa light bro^vn, the third vein uniting with costa beyond 

 the apex. Halteres fuscous yellowish. Legs a pale straw, rather 

 thickly haired; claws long, slender, evenly ciu"ved, the pulvilli rudi- 

 mentary. Genitalia; basal clasp segment stout; terminal clasp 

 segment long, stout; dorsal plate broad, broadly and triangularly 

 emarginate, the lobes narrowly rounded; ventral plate long, narrow, 

 narrowly incised. Type Cecid. 527. 



Trishormomyia dilatata n. sp. 



This species was taken in a trap lantern at Newport, N. Y., June 

 27, 1906. 



Male. Length 3 mm. Antennae as long as the body, sparsely 

 haired, light brown; fotuteen segments, the fifth with stems one 

 and one-half times their diameters; terminal segment somewhat 

 produced, the distal enlargement narrowly oval. Palpi; the first 

 segment subquadrate, the second somewhat produced, the third 

 longer and tapering to a slender, acute apex. Face yellowish brown. 

 Mesonotum pale yellowish brown with an ill-defined sublateral 

 carmine spot near the base of the wings. Scutellum dark carmine, 

 yellowish basally, postscutellum yellowish. Abdomen dark brown, 

 darker basally, the segments margined with brownish orange. Wings 

 (pi. 15, fig. i) subhy aline, costa dark brown, the third vein uniting 

 with costa beyond the margin. Coxae yellowish orange with vari- 

 able carmine markings. Legs fuscous yellowish, variably tinged 

 with carmine at the articulations; claws long, slender, slightly curved, 

 the pulvilli rudimentary. Genitalia (pi. 18, fig. 3); basal clasp 

 segment stout; terminal clasp segment long, stout, and triangularly 

 emarginate; dorsal plate broad, broadly emarginate; ventral plate 

 broad, broadly emarginate. Type Cecid. 407. 



