W. G. DIETZ 141 



Ormosia perplexa sp. n. 



Fuscous, wings unicolorous, discal cell opens into the third posterior cell, 

 veins six and seven subparallel, stigma indistinct. 



9, Length, 3.5 mm.; wing, 3.75 mm. 



Head, palpi and antennae fuscous, the two basal joints of the latter a shade 

 paler than the flagellum, joints of the latter ovoidal, becoming more elongate 

 outwardly, the whole antennae covered with short, fine pubescence. 



Thorax fuscous, mesonotum with a grayish bloom, a rather broad, median 

 darker stripe with a row of short pale hairs along its lateral margins, some 

 longer, scattered hairs behind the transverse suture; scutellum and meta- 

 thorax with a grayish bloom and some scattered hairs. Legs light brown, 

 coxae and femora towards the base, paler. Halteres pale with a brownish 

 tinge, knob yellowish-white. Wings brownish, pubescence dense, stigma con- 

 colorous, the discal cell opens into the third posterior cell, posterior cross vein 

 before the discal cell, outer half of vein seven parallel to vein six. 



Abdomen fuscous, the hairy vestiture very fine and sparse. Ovipositor 

 curved, reddish, paler towards the apex. 



Holotype : 9 ; Waverly, New York. May. 



A single specimen in my collection. Agrees with 0. cockerelli, 

 paraliela and monticola, in the discal cell opening into the third 

 posterior cell and vein six and seven not diverging towards the 

 wing margin. From the first two of these it differs in the fus- 

 cous color of the thorax and from monticola in its darker thorax, 

 wings more brownish with no trace of darker stigma, and the 

 knob of the halteres whitish yellow. 



Ormosia modica sp. n. (PI. X, figs. 7 and 7A.) 



Yellowish-fuscous, basal joints of antennae yellow, the discal cell opens into 

 the third posterior cell, vein six and seven diverging towards the wing margin. 



cf, Length, 4 mm.; wing, 7.75 mm. 



Head yellowish-fuscous, palpi and antennae fuscous, basal joints of latter 

 yellowish, flagellum slender, beset with long, soft hairs, generally speaking 

 longer than the respective joints, and a short pubescence; the antennae bent 

 backwards reach to the insertion of the wings. Eyes rather widely separated 

 above. 



Thorax tinged above with pale brown, its dorsum with an ill-defined, median, 

 pale fuscous stripe and a row of long, yellow hairs on each side; metanotum 

 brown, shining, with some scattered hairs. Pleura with faint silvery reflection. 

 Halteres pale, knob fuscous. Legs yellowish-brown, coxae and femora towards 

 the base, yellowish. Wings pale gray, moderately wide, pubescence long and 

 dense; the subcostal cross vein very remote from the end of subcostal vein, 

 the discal cell opens into the third posterior cell, great cross vein curved and 

 at the proximal end of the discal cell; vein seven strongly diverging from vein 

 six; region of stigma scarcely darker, costa dark brown, other veins paler. 



TRANS. AM. ENT. SOC, XLII. 



