﻿36 



昆蟲 舉雜誌 第ず 《き 第壹 彼 



segments each with a small luscous spot in the middle of the respective 

 seg"ment, on the sides being fuscous striped. 

 Length ― ^ 12 mm. 



Hab. ― Hokkaido (Chitose), Honshu (^ChGzenji near Nikkö) ； 2 ^ 

 specimens collected by Prof. S. Matsumura and Mr. H. 

 Okamoto. 



18. Syrphus (Syrphus) kotoriensis Mats. (n. sp.) 



^ Much resembles to S. ribesil L., but differs from the latter as 

 follows : 



Face in the middle distinctly mingling some short fuscous hairs. All 

 the abdominal bands reach to the lateral margin with their whole surfaces, 

 the 2nd and ^rd bands scarcely mingling fuscous hairs, each in the 

 middle narrowly notched posteriorly; venter orange-yellow, in the middle, 

 except the 4th sec^ment, without fuscous spots, on the sides fuscous 

 spotted ； yellow pubescented, not mingling short fuscous hairs. Legs 

 yellow, coxae and trochanter fuscous, the nind tarsi somewhat infuscated. 

 Length ― ^ 1 1 mm. 



Hab. ― Saghalien (Kotori) ； one ^ specimen collected by the authors. 



19. Syrphus (Syrphus) Shibakawae Mats. (n. sp ) 



(PI. II， fig, 20.) 



ピ ^ Thorax eolden preen. Face and cheeks yellow, pale yellowish 

 pubescented. Front olivaceous yellow, above the antennae with a fus- 

 cous arch, fuscous pubescented. Vertex fuscous. Antennae yellow, the 

 ^5rd joint on its back somewhat fuscous. Thorax yellowish pubescented, 

 on the side yellow, pleura and pectus grayish black, the former with a 

 grayish vertical stripe; scutellum yellowish pubescented, on the hind 

 margin mineling some black hairs. Calypteres and halteres pale testa- 

 ceous. Winp"s hyaline, stigma fulvous, veins brown and fuscous. Abdomen 

 somewhat as broad as the thorax, black, with 3 broad oranee-yellow 

 bands of the subequal breadth, of which the first band being interrupted, 

 the 2nd and 3rd each scarcely emarginated at the posterior margin ； each 

 band reaching to the lateral margin with its whole surface ； each hind 

 broad margin of the 4th and the 5th (except a middle spot) yellow ； 

 black and yellow pubescented, the 3rd and 4th»bands each on the posterior 



