﻿134 昆蟲 學雜誌 第 參卷第 參 • 四號 



、 Black, with an indigo luster- Face grayish pruinous, with whitish 

 hairs ； vertex and front short black pubescent. Antennae black, 

 the 3rd joint and arista brown. Thorax and scutellum pale fulvous 

 pubescent. Wings hyaline, with a fulvous tinge, especially in the 

 middle, stigma fulvous, veins brown. Calypteres whitish, halteres 

 citron-yellow. Abdomen black, scarcely broader than the thorax, 

 nearly twice as long as the thora with 3 pairs of yellowish spots, 

 those of the 3rd and 4th segments being quadrate, somewhat 

 rounded at the inner sides of the 5th smaller and at the lateral 

 sides much broader- Venter fuscous, with yellowish spots as above, 

 grayish pubescent. 丄 ^egs yellow, coxae, trochanter, and the hind 

 legs (except both ends of the femur and tibia, as well as the middle 

 part of the tarsus), fuscous. 

 Length — 8.5 mm. 



Hab. ― Sagtialien (Toyohara) ； one female specimen collected by 



Messrs J. Adachi and S. Isshiki. 

 Nom. Jap. — Motodomari-tsuyahirataabu. 



0. Melanc stoma mellinum L. PI. i, fig. 14， ？. 



Musca mellina L. Fauu. Su c. P. 1821 (1761). 

 Syrphus mellarius Meig. Syst. Beschr. vol. Ill, 

 - P. 328 (1822). 



Syrphus melliturgUS Meig. Syst. Beschr. vol. Ill, 



P. 329 (1822). 

 Melanostoma mellina Schin Faun. Austr. vol. I. 



P. 292 (1S62) ； COQUILLETT. 



Proc. Nat. Mus. U.S.A. vol. XXI, P. 321 (1898); 

 Matsumura — Thous. Ins. Jap. vol. II， P. 91, PL 

 fig. 9/ ？ 09O4). 

 ^ . Aeneous black. Face black, not shining, face grayish 

 pruinous, with whitish hairs ； front with dark brown and vertex 

 with yellowish brown hairs. Antennae dark brown, arista some- 

 what paler. Proboscis shining black, at the apex yellowish brown. 

 Thorax and scutellum with pale fulvous hairs, at the humerus 

 somewhat grayish pruinous. Wings hyaline, scarcely infuscated, 



