﻿THE ENTOMOLOülCAL MAGAZINE, Vo に III. Pt. Ill & IV. 139 



fulvous pubescent- Wings hyaline, with a light fulvous tinge. 

 Calypteres whitish, halteres citron -ye How. Abdomen scarcely broad- 

 er tlian the thorax, its sides nearly parallel throubgout, with 4 pairs 

 of yellowish spots, those of the 2nd segment smaller, triangular, 

 touching the lateral sides, those of the 3rd and 4th segments 

 transverse, obliquely truncated at the inner sides and each building 

 a triangle in the intermediate space, those of the 5th segment con- 

 tiguous or nearly contiguous, being- triangularly incised at the middle. 

 Venter nearly marked the same as above, but paler. Legs yellow, 

 coxae and the middle part of the hind femur, somewhat inguscated. 

 Lene^th — 7.5 mm. 



Flab. — Hokkaido (Sapporo), , Honshu (Iwate) ； one female speci- 

 men collected by Mr. Teizo Ogasawara, and another 

 female one collected by Prof. S. Matusmura. 



Nom. Jap — Eguri-tsuyahirataabu- 

 13. Melanostoma sachalinense Mats. 



(n. sp.) PI. I, fig. 10， も 



^ Aeneous black. Face grayish pruinous, with a few whitish 

 hairs ； front and vertex fulvous pubescent. Antennae yellow, the 

 3rd joint on its back and at the apex scarcely infuscated. Thorax 

 and scutellum pale fulvous pubescent. Wings hyaline, with a fulvous 

 tinge, veins brown, stigma fulvous. Calypteres gravish, halteres 

 yellowish brown. Abdomen fuscous, in the middle distinctly broad- 

 er than the thorax, with 4 pairs of yellowish spots, those of the 

 2nd segment triangular, slightly incised at the hind margin, those 

 of the 3rd and 4th segments each dilated at the inner side, at the 

 hind margin distinctly incurved, those of the 5th segment very 

 narrow at the inner sides and nearly contiguous. Venter yellowish, 

 with fuscous marking. Leg-s yellow, coxae, middle part of the hind 

 fumur and tibia, somewhat infuscated. 



Length — 7-5 nim. 



Hab. ― Saghalien (Toyohara) ； one female specimen collected 



by Messrs. J. Adachi and S. Isshiki. 

 Nom. Jap. ― Karafuto-tsuyahirataabu. 



