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毘蟲 舉雜誌 第》^卷^^巧'>^號 



一一 The second abdominal segment with 2 traus ゾ erse pale yellowish 

 spots ... yezoensis n. sp. 



1. Pipiza biglumis Mats. (n. sp ) PI. I， fig. 9， 年. 



^. Black, shining. Face, front and vertex deep black, with a metallic 

 luster, covered with white hairs, front broad ； compound eyes with very 

 short black hairs; antennae long, the first and second joints short, brown, 

 the third yellowish brown, long elliptical, the arista black, at the base 

 yellowish. 



1 no rax grayish , scutellum at the posterior margin brownish pub- 

 escented- Abdomen elliptical, nearly bare, on the second segment with 

 two round, subhyaline, pale yellowish markino-s ； ventral side black, on 

 the second segment just to the opposite side of the dorsal-markings, with 

 two whity markings. Legs black, knees and tarsi yellow. Wings short, 

 hyaline, veins black, stiprna brown. Halteres clear yellow. 



Length ― g 8 mm. ； exp. 12 mm. • 



Hab. 一 Honshü (Tamba), Kiushu (Moji). 



Jap. name -— Futahoshi- ko-hirataabu. 



2. Pipiza yezoensis Mats, (n.sp.) PI. I, fig. 1 1. cT. 



Black, head bluish black, face and front with gray hairs ； compound 

 eyes with long tawny or grayish hairs ； antennae small, the first and 

 second joints black, with black hairs, the third yellowish brown at the 

 base, the arista black, yellowish at the base ； proboscis ferruginous. 

 Thorax in the male more hairy than that of the female, on the posterior 

 margin with yellowish gray hairs. Abdomen elliptical, with long grayish 

 hairs, on the second segment with two triangular pale yellowish mark- 

 ings, somewhat 汐ち -shaped, on the posterior margin of each segment with 

 black hairs ； ventral side brown, at the posterior margins of the second 

 and third segments with yellowish hairs. 



Legs black, covered with gray hairs ； femora at the apices, tibiae on 

 both ends and the tarsi, orange yellow, the claws black. Wings hyaline, 

 veins and stigma brown, in the middle near the stiema with a fuscous 

 nebula. Halteres pale yellowish. 



Length ービき 9 ram. ； exp. ^ 17 mm" ^ 17.5 mm. 



