﻿THE ENTOMOLOGIC/\L MAGAZINE, Vol. III. Pt. に 



39 



and stigma fuscous Calypteres pale yellow' halteres yellow. Abdomen 

 black, with 3 yellow bands, of which the first being very widely inter- 

 rupted and not reaches to the lateral margin ； the 2nd interrupted 

 narrowly in the middle, each on tlie hind margin angularly emarginated, 

 reaching to the lateral margin with its half surface ； the 3rd in the middle 

 posteriorly very deeply emarginated, so that it seems nearly interrupted, 

 and on each side posteriorly angularly emarginated as in the 2nd band 

 and reaches to the lateral side with its two thirds of the lateral surface ； 

 the 4tli segment on the hind margin narrowly and a lateral spot of the 

 5th yellow ； yellowish and fuscous pubescented. Hypopyeium black. 

 Venter yellow, a spot in the middle of the 3rd, the 4th at the nind margin, 

 the 5th and the lateral spots, fuscous. Legs yellow, coxae, trochanter 

 and the bases of the femora (in the hind femur the fuscous part being" 

 extended near up to the apex) and the apex of the hind tarsus, fuscous. 

 Length ― ^ 12 mm. 



Hab. ― Hokkaido (Sapporo) ； one specimen collected by Prof. 

 S. Matsumura. 



Sub. Parasyrphus Mats. 



Compound eyes more or less pubescented, in the male the upper facets 

 subequal to those of the lower. Vertex nearly in an equilateral triangle, 

 somewhat as long as the touched portion of the compound eyes. Ocelli 

 nearly in an equilateral triangle, the anterior one beinp" somewhat smaller. 

 The 3rd longitudinal vein opens exactly in the apex. 



We have in Japan the following 2 species. 



Table of species, 



Hypopygium entirely black ； face with a black stripe 



aeneostoma n. sp. 



Hypopygium entirely yellow; face without a black stripe 



nigrogena n. sp. 



Syrphus (Parasyrphus) aeneostoma Mats. (n. sp.) 

 1^ Thorax dark aeneous, with 3 indistinct darker stripes. Face pale 

 yellow, with a bluish tinge, fuscous pubescented ； oval margin and cheeks 

 aeneous black, facial stripe fuscous. Front olivaceous, above the antennae 



