2 PROCEEDINGS OF THE NATIONAL. MUSEUM vol. ©R 



furcal; first abscissa of radius slightly shorter than second. Black; 

 an indistinct spot on the clypeus medianly, the supraclypeal area, a 

 narrow line along the posterior orbits extending obliquely across the 

 vertex to the occiput, the narrow, posterior margin of the pronotum, 

 the apical margins of tergites 4 to 9, inclusive (slightly interrupted 

 medianly on sixth), and two obscure spots on the sides of the third 

 tergite, bright-yellow; tibiae and tarsi ruf o-f errugineous ; wings 

 brownish hyaline, the anterior portion of the front wings darker; 

 venation dark-brown ; costa and stigma pale-brown ; head and thorax 

 clothed with long, black hair. 



The paratype females have an oblique spot on the posterior dorsal 

 part of the scutum and in one of them the lateral spot on the third 

 tergite is wanting. 



Male. — Length, 10 mm. The male differs from the above descrip- 

 tion of the female in color as follows: Mandibles, except apices, the 

 entire clypeus, scape beneath, a large spot on the side of the pro- 

 notum, proepisternum, anterior margin of mesepisternum, tegulae, 

 all of the sternites and an obscure spot on the side of the second 

 tergite, j^ellow. The apices of the four anterior femora and most of 

 the posterior femora are testaceous. 



Type-locality. — Okeanskaja, Siberia. 



Paratyj)e-locality. — Kongaus, Siberia. 



Described from one female from the type locality collected August 

 .15, 1923, by T. D. A. Cockerell, from two females and one male 

 (allotype) from the paratj^pe locality collected August, 1923, by 

 T. D. A. Cockerell. 



Type., allotype., and paratypes. — Cat. No. 27613, U.S.N.M. 



The two paratj'^pe females and the allotype male lack the antennae 

 beyond the scape. 



TRICHIOSOMA SERICEA Konow 



One female from Kudia River, Amagu, Siberia, collected July, 

 1923, by T. D. A. Cockerell. 



ARGE, species 



A single male from Kudia River, Amagu, Siberia, collected in 

 July, 1923, by T. D. A. Cockerell does not seem to be described. 

 It is related to cyaneocrocera and may be the male of kongauensis 

 but at present can not be definitely associated. 



ARGE CINGULATA Jakowlew 



One female, which lacks the flagellum, from Kongaus, Siberia, 

 collected August, 1923, by T. D. A. Cockerell. This specimen agrees 

 well with both Jakowlew's and Konow's descriptions of this species. 



