﻿THE ENTOMOLOGICAL MAGAZINE, Vol. III. Pt. I. 35 



Length ― ^ 12 mm. 



Hab. ― Honshu (Chüzenji in Nikko) ； one ^ specimen collected by 

 Prof. S. Matsumura. 



16. Syrphus (Syrphus) akakurensis Mats (n. sp.) 



Much resembles to S topiarius Meig , but differs from the latter as 

 follows : 



§ Much smaller. Face pale yellowish pubescented, facial tubercle more 

 protruded downwardly, so that it seems somewhat beak-like ； the hairs 

 on the front much less. Above the antennae with a broad bluish black 

 arch, the fuscous triangle not distinct. Compound eyes much less pub- 

 escented. Scutellum on the anterior half yellowish and on the posterior 

 half fuscous pubescented, the hind margin beneath with sparse pale 

 yellowish hairs. Stigma of the wing paler. Abdomen quite similarly 

 banded, but the first interrupted band being- nearly straight, touching 

 the lateral margin nearly with its half surface, while 2nd and 3rd touch 

 nearly with their whole surfaces ； the 2nd and 3rd bands fuscous pubes- 

 cented. Venter pale yellow, on the sides fuscous spotted, the 2nd only 

 with a small fuscous spot in the middle ； fuscous and yellowish pubes- 

 cented. Apical half of the hind tibia fuscous, the first 2 tarsi at the 

 apices being scarcely infuscated. 

 Length ― § ll mm. 



Hab ― Honshu (Akakura in the Prov. Echigo) ； one § specimen 

 collected by the late M. Shibakawa. 



17. Syrphus (Syrphus) chujenjianus Mats. (n. sp.) 



Much nearer to S. akakurensis Mats., differs from the latter as 

 follow : 



,^ Facial tubercle not downwardly protruded; front much more fuscous 

 pubescented. Compound eyes with very few hairs, being scarsely visible. 

 Scutellum on the sides reddish, fuscous pubescented, at the extreme 

 anterior margin with yellowish hairs. Wings yellowish suffusca. Ab- 

 domen somewhat narrower in the middle, the first interrupted band 

 reaching to the lateral margin with its upturned apical (me third, the 2nd 

 and 3rd with their upturned halves, the 2nd and 3rd bands with much 

 more and longer fuscous hairs. Venter pale yellow, the 2nd ― 5 th 



