﻿18 



昆 St 舉 雑誌 第！^卷第壹號 



thickened near the apex and with a black ring, tarsi yellow, each near 

 the base with a brown ring. Wings hyaline, stigma brown. Halteres 

 yellow. 



Length — c/' ? 7 mm. ； exp. ビ ii.5 mm., 宇 13 mm. 

 Hab. ― Okinawa ； collected by Mr. M. Kuroiwa. 

 Jap. name —— Okinawa-mado-hirataabu. 



2. Eumerus japonicus Mats. (n. sp.) PI. I, fig. 14， o^. 



ビ. Head black ； face with white hairs, ocellar triangle polished and 

 without hairs ； antennae yellowish brown, the first and second joints very- 

 short, the third compressed, nearly rounded, its dorsal margin infuscat- 

 ed ； compound eyes bare. 1 horax black, polished. Scutellum with long 

 yellowish hairs on its border. Abdomen black, polisned, not broader in 

 the middle ； on the second segment with two rhomboidal yellow mark- 

 ings and on the sides with long white hairs, on the third with two 

 yellowish spots, which being much narrower than those of the second 

 segment. 



Le9"s, wins^s and halteres beinp^ iiist like those of the former species. 



Length ― ビ 8 mm. ； exp. 13 mm. 



Hab. ― Honshu Kyoto); collected by Mr. M. Suzuki. 



Jap. name -—— Mado-hirataabu. 



3. Eumerus 4-guttatus Mats. (n. sp.) 

 Much resembles to Okinawellus Mats. 



ビ. Black, with some bluish tingle. Face and frontal- triangle gray- 

 ish : white, covered with fine short silvery hairs ； vertex and occiput 

 bluish black, with fine tawny hairs ； antennae yellow, the first and second 

 joints somewhat brownish, the third triang-ular, at the apex and the 

 arista fuscous, the latter at the base yellowish ； compound eyes with 

 very fine grayish hairs. Thorax and scutellum with few tawny hairs ； 

 the hairs of the pleurae and posterior margin of scutellum being 

 longer. 



Abdomen narrow than the thorax, cylindrical, on the second 

 segment two larp-e yellow markings, their ends not reaching' to the 

 lateral margins, on the third segment on each side with a narrow pale 



