W. G. DIETZ 143 



Brown with a reddish tinge; antennae shorter and more attenuate, pubes- 

 cence more sparse and of less length, the second joint distinctly thicker than 

 the first; the dark mesonotal lines are less distinct, hairs of mesonotum longer 

 and more conspicuous. Wings more brownish, pubescence longer and more 

 dense; the hairy vestiture of the abdomen is longer and denser posteriorly. 

 Ovipositor yellowish-red, upper valves curved, with an angular projection 

 each side at base. 



Holotype: c?; Holland, New York. May 25, 1911. 



Allotype: 9 ; topotypic. Same date. 



Paratypes : 3 females ; topotypic. Same date. 



The nearest ally of this species is 0. deviata and from which it 

 is distinguished by its generally darker coloration, the meso- 

 notal lines and the darker wings. The construction of the hypo- 

 pygium is also very different. The specimens are in the collec- 

 tion of Mr. M. C. Van Duzee. 



Ormosia deviata sp. n. (PI. X, figs. 9 and 9A.) 



Brown; wings unicolorous, discal cell opens into the third posterior cell, 

 veins six and seven diverging to the wing margin. 



d", Length, 4 mm.; wing, 5.5 mm. 



Head, palpi and antennae fuscous, the latter reach to the insertion of the 

 wings, the two basal joints moderately stout, flagellum slender, joints one to 

 five or six ovoidal, outer joints elongate, each joint with a whirl of long and 

 rather soft hairs, the latter being about two or three times the length of the 

 joint, no short pubescence noticeable, eyes widely separated above. Occiput 

 beset with long hairs. 



Thorax reddish-brown, sides of collare and lateral margin of mesonotum 

 whitish, the latter with broad fuscous median stripe and scattered, short, fine 

 hairs; scutel and metanotum concolorous. Pleura yellowish-brown with 

 grayish bloom. Halteres pale, peduncle with a short, fine pubescence, club 

 partially infuscate. Legs yellowish-fuscous, coxae and femora towards the 

 base yellowish, outer tarsal joints fuscous. Wings moderately wide, gray- 

 ish, pubescence dense and rather long in apical part of wing and giving the 

 wing a pale fuscous appearance, region of stigma infuscate, the discal cell opens 

 into the third posterior cell, the subcostal cross vein very close to origin of the 

 praefurca, the posterior cross vein at the base of the discal cell, veins six and 

 seven diverging to the wing margin. 



Abdomen fuscous, hairy vestiture pale, not dense and rather long on the 

 apical part of the abdomen. Hypopygium reddish-brown, pleurites long, 

 basal half yellowish-white, infuscate towards the apex; a pair of strong, curved 

 bristles, thickened towards the base, arise from the ninth tergite. 



9, Length, 3.5 mm.; wing, 4.5 mm. 



Does not differ in appearance from the male; antennae shorter and hairy 

 vestiture not quite so long; mesonotum rather yellowish-fuscous. Abdomen 

 clothed with fine, short pale pubescence, a few long hairs at the extremity. 

 Ovipositor reddish, upper valves — as usual in the genus — curved. 



TRANS. AM. ENT. SOC, XLII. 



