﻿THE ENTOMOLOGICAL MAGAZINE Vol. 11. 



147 



2nd spots near the middle and 3rd near the anterior margin of the 

 respective segments, the 5th and 6th segments each on the hind margin 

 narrowly yellow ； pale yellowish and black pubescented, the hairs on the 

 posterior part beinp- mostly black. Venter yellow, each segment with a 

 larp-e fuscous spot. Legs yellow, coxae, trochanter, the basal halves of 

 the femora (the hind femur except the apex fuscous), and the apices of 

 the tarsi, as well as the middle of the 麵 posterior tibia, fuscous. 

 Length 一 ^ 13 mm. 



Hab. ― Honshu (Komaba ^in Tokyo) ； I § collected by Mr. S. 



HiRAYAMA. 



Metasyrphus Mats. (n. g.) 

 Head moderately large, broader than the thorax ； in the male the 

 vertex much elevated, as long as the touched portion of the compound 

 eyes, in the female vertex broader than the half breadth of the front 

 between the antennae ； the facial tubercle somewhat higher than the 

 antennal-process in profile. Proboscis long, robust. Antennae large, 

 the 3rd joint oval, somewhat compressed on its back, nearly twice as 

 long as the first and 2nd take ひ together; the arista near the middle on 

 its outer side of the back, nearly as long" as the antenna itself. Compound 

 eyes not pubescented, in the female the front side in profile nearly- 

 straight. Wings moderate, 3rd logitudinal vein distinctly curved into the 

 first posterior cell, opens before the apex; the cross-vein at about i《 of 

 the discoidal cell near the base, the bend of the 4th lonsjitudinal J vein 

 with a long appendage. Abdomen as broad as or broader than the 

 thorax, on the lateral margin not distinctly ridg-ed, in the female nearly 

 always with lunular spots. We have in Japan the following" 6 species. 



Type ― Syrphus corollae F. 



Table of Species. 



1. Abdominal bands in the male, except the first, sometimes inter- 

 rupted and sometimes not interrupted 2 



― Abdominal bands in the male, all interrupted 3 



2. Scutellum black and yellow pubesctnted ； large species • 



frequens n. sp. 



― Scutellum yellow pubescented ； small species COrollae F. 



