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昆蟲^ 雜誌 第參卷 第で ま IS? 



vellow. Abdomen olack, with a bluish snade, broadest at the apical part 

 of the 3rd see^ment, with 3 yellow bands, of which the first band being 

 anteriorly anp-ularly and posteriorly shallowly emarginated, the 2nd not 

 emar^inated , the 3rd on the hind margin bow-like shallowly emare^inated; 

 the first 2 bands each reaching to the lateral margin with its half surface, 

 while the 3rd reaching with its two thirds ； the hind margin of the 4th 

 broadly and the 5th, except the short fuscous band in the middle, yellow ； 

 yellowish and fuscous pubescented, the 3rd band minglins* some short 

 fuscous hairs in the middle. Hypopygium yellow, in the middle with a 

 aeneous black spot, yellowish and brownish pubescented Venter yellow, 

 each segment in the middle with a small fuscous spot, the 3rd and 4th 

 each at the hind margin fuscous, the 2nd on the hind lateral margin 

 fuscous spotted ； long pale yellowish and short fuscous pubescented. 

 Legs yellow, coxae, trochanter, and each middle spot of the nind femur, 

 as well as the tibia, fuscous. 

 Lenpth ― 115 mm. 



Hab. ― Okinawa (Naha) ； one ^ specimen collected by Mj*. M. 



KUROIWA. 



Much resembles to Macrosyrph US hakiensis Mats , but differs from 

 the latter by the yellowish hairs of the scutellum and the form of abdomen. 



5. Syrphus (Macrosyrphus) hakiensis Mats. (n. sp.) 



Thorax aeneous black, with a biuish shade. Face and cheeks pale 

 yellow, with a bluish tinge, paler pubescented, without facial stripe ； 

 front olivaceous yellow, black pubescented ； vertex long" and narrow. 

 Compound eyes quite densely crrayish pubescented. Antennae yellowish, 

 the 3rd joint on its back somewhat infuscated. Thorax on the sides 

 yellowish ； pale fulvous pubescented. Scutellum yellow, anteriorly 

 yellowish and posteriorly fuscous pubescented, the hairs on the hind 

 margin and sides pale fulvous. Wings hyaline, veins fuscous, stigma 

 fulvous. し alypteres pale yellowish, halteres yellow. Abdomen much 

 broader than the thorax, black, with 3 broad, not interrupted yellow 

 bands, of which the first somewhat broader than others and at the hind 

 margin scarcely and at the posterior marp-in deeply emarginated, reach- 

 ing to the side with its half surface ； the 2nd and 3rd subequal in the 



