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昆蟲 舉雜誌 第參卷 第壹賊 



IUSCOUS hairs, ming-lmg a lew short yellowish nairs. riind femur on the 

 apical half very short fuscous pubescented, which being in the female 

 fuscous at the extreme base. 



Length ― 11-11.5 mm 



Hab. ― Hokkaido (Mt Moiwa near Sapporo) ； 2 (i ビ， i ^) speci- 

 mens collected on the latter part of July by Prof. S. Matsu- 



MURA, 



Differs from S. ribesil L in smaller size, narrow fuscous ventral stripe 

 and brownish pubescented hypopygium. 



14. Syrphus (Syrphns) yamahanensis Mats, fn.sp.) 

 Near S. Moiwanns Mats., but differs from the latter as follows : 



^ Abdomen much narrower, scarcely broader at the 2nd segment. 

 The 2nd and 3rd bands scarcely emarginated posteriorly, with very few 

 yellowish hairs, not mingling fuscous hairs ； the 5th segment scarcely 

 transversely wrinkled. Venter much less pubescented, on the 3rd and 

 4th ses^ments mingling some short fuscous hairs. Legs nearly the same, 

 but the hind femur beyond the middle fuscous pubescented, mingling 

 very few long pale yellowish hairs. 

 Length ― ^ 1 1 mm. 



Hab. ― Hokkaido (Yamahama near Sapporo) ； one § specimen col- 

 lected by Prof. S. Matsumura. 



15. Syrphus (Syiphms) daiyagawanns Mats, (n.sp.) 

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

 罕 Face in the middle mingles some fuscous nairs. Antennae more 



infu seated, each antennal-process above fuscous spotted, without a zig- 

 zag arch and a longitudinal stripe on the front ； front grayish olivaceous 

 pruinose. Scutelium on the anterior half yellowish, and on the posterior 

 half fuscous pubescented. Calypteres and halteres pale yellow, the latter 

 not being infuscated. Abdomen much constricted at the base , the '^nd 

 and 3rd bands narrower and fuscous pubescented, mingling very few 

 yellowish hairs, each band anteriorly in the middle with a small angular 

 protuberance. Venter pale yellow, the 2nd segment in the middle with 

 a small fuscous spot. The hind femora, except the apices, the same 

 tibiae, except the bases, and the same tarsi, fuscous. 



