312 rilOCEEDINGS OF Tllh' NATIONAL MrsKlM. voi..xxi. 



almost live times as long as the style. Thorax somewhat polished, a 

 median line on the anterior third, the sides and a spot at eac-li anterior 

 angle, one behind each humeri and a third on the suture eacli side, 

 gray pruinoso: liairs and bristles of the metanotum black, those of the 

 pleura mixed black and yellowisli; scutcllum convex, entirely covered 

 with black hairs. Abdomen i)olished, the i)<)steiior margins of seg- 

 ments 2 to 4 iu the male, 2 to 5 in the female, gray itruinosc, hairs black, 

 those on the sides of the first four segments in the male, on the sides 

 and iMjsterior nuirgins of the first live segments in tlie Icnnile, yellow- 

 ish. Hairs of legs black, excei)t on the basal two thirds of the under- 

 side of the middle femora, and on the basal two thirds of the hind 

 femora, where they are yellowish, tiiose on the middle and hind tibiae 

 of the female mixed yellow and black; inner side <d" the apical two- 

 thirds of the front tibiae and the underside of the first joint of the 

 front tarsi densely covered with short golden-yellow hairs. Wings 

 hyaline, a black spot at the apex and a brown clou<l (utxcring the vein 

 and crossvein at the apex of tiie second basal (!ell, and sometimes the 

 crossveiu at the apex of the di seal cell; sometimes a brownish cloud 

 covers the small ci'ossvein; veins brown, the tliird b<'fore forking with 

 the second yellow. Length, 10 to Ki mm. Five males and three 

 females (No. 053). 



Type.—^o. 3978, U.S.N.M. 



DASYPOGON JAPONICA Bigot. 



Daaypoyon japonira Hioot, Ann. Soc Ent. Fi.inco, 187S, i>. 111. 



Three males and two females (No. 054). The species was originally 

 described from Japan. 



OMMATIUS PENNUS Walker. 

 Ommuliii.i pt.iinua Walkku, List Dipt. Iius. Hrit. Miis., 181!), I't. 2, ]>. 4G!». 



Three males and four females (No. it~)'>), agreeing fairly well with the 

 description, which was founded on specimens from Corea and IJorneo. 



ASILUS KLAVICORNIS Ruthe. 



Jitilua flai'itorniH Rutuk, Isi.s, ISSl, p. 1217. 



Anilim olivierii MacijUaut, Dipt. Kxot., 1S:{S, I, Pt. 2, jt. 130 [252]. 



One male and six females (No, (JtJl), agreeing well with the descrip- 

 tions by the various lOuropean authors. The species has heretofore 

 been reported from lOurope, and belongs to the subgenus Ueligmoueura. 

 The synonymy given above was first published by Dr. Loew.' 



'Liiiu. Ent., 1841), pAtl. 



