420 l^UILETIN 45, UNITP:r) STATES NATIONAL MU8EUM. 



fifth stouter, the joints beyond to the last oval-moniHform, the hist 

 cone-shaped. The scutelhmi has a single larjje fovea at base, the bot- 

 tom with some raised lines; the median carina distinct only at the tip 

 of the scutellum. Coxa? piceous-black, the legs rufous. Tegulai black. 

 Wings subhyaline, with a fuscous pubescence. The third abdominal 

 segment is very little longer than the fourth, the fifth and sixth about 

 equal, and longer than the third and fourth together. 



Habitat. — Ottawa, Canada. 



Types in Coll. Ashmead. 



Described from two 5 specimens received from Mr. W. Hagiie Har- 

 rington. 



Tropidopria tetraplasta, sj). iiov. 



9 . Length, not quite 2"'"'- Polished, black; cheeks bare; collar, met- 

 apleura and petiole woolly; dorsum of metathorax bare, smooth, with 

 a median carina; mandibles piceous; antenna% except the club, and 

 the legs, including coxic, pale brownish-yellow. Antenuie 12-jointed, 

 terminating in a 4-jointed club; the pedicel is mu(;h stouter, but not 

 quite as long as the first flagellar joint; the first, second, and third 

 flagellar joints equal, the three following a little shorter and thicker, the 

 club rather abrupt, the last joint the largest, oval, but scarcely longer 

 than the penultimate. Scutellum with a large fqvea at base, its bot- 

 tom with about 5 raised lines; dorsum of scutellum carinated, but the 

 carinse not extending into the fovea. Wings large, ciliated, the mar- 

 ginal vein triangular, pale brown. Abdomen pointed-ovate, scarcely 

 longer than the head and thorax together, the petiole short, not longer 

 than thick, woolly, the apex pointed, pilose. 



Habitat. — Washington, D. C. 



Type in Coll. Ashmead. 



Described from a single specimen taken in October. It comes lu^arest 

 to T. simulans, but the antenna; are quite difterent, having a distinct 

 4-jointed club, and the color of antenme and legs are i)ale yellowish. 



DIAPRIA Latreille 



Pr^c, p. 110 (1796); Forster, Ilym. Stud., ii, p. 123 (1856). 

 Psihis Pauz. 



(Type D. clegans Jur.) 



Head rounded or subglobose, without a frontal sulcus, the occiput 

 rounded. Ocelli 3, small, placed anteriorly. Eyes rounded. Antenuje 

 on a frontal ijrominence, in $ 12-jointed, clavate, or gradually incras- 

 sated toward tips, sometimes the last three or four joints much en- 

 larged; the scape extends beyond the ocelli; the i)edicel is usually 

 longer and stouter than the first funiclar joint; in S 14-jointed, nodose- 

 pedicellate, with whorls of long hairs, the first funiclar joint longer 

 than the second, the second curved or dilated toward one side. 



Maxillary palpi rather short, 5-joiuted, 



Mandibles bifid at tips, 



i 



