﻿THE ENTOMOLOGICAL MAGAZINE VoB. II. 141 



black pubcscented. Proboscis brown. Compound eyes brown and gray- 

 ish pubescented Antennae fulvous, the 3rd joint on its black in fu sea ted. 

 Mesonotum on the sides yelloWj fulvous pubescented. in the ir.ale with 3 

 fuscous stripes. Scutellum yellow, with yellowish hairs. Wings hyaline, 

 yellowish, veins brown, stigma yeilow, the 3rd longitudinal vein nearly 

 straight. Halteres pale yellow. Abdomen yellow, with 7 black bands, 

 except the first, the all being interrupted in the middle, the 2nd segment 

 near the anterior margin willi a small diamond-shaped black spot, the 

 first, 3rd and 5th bands broader, and each nearer to the hind margin, 

 4th and 6th narrower and each situated at the base of each segment, 

 lateral margins being fuscous. Venter yellow, the 2nd segment with 

 a triangular spot, the 3rd and 4th with bands, being produced in the 

 middle anteriorly, each on the sides sending- upwardly ' a fuscous 

 oblique stripe. Sternum aeneous black. Legs yellow, the hind tarsi 

 externally brownish. 



Length — ^ 15-16 mm. 



Hab. 一 Honshu, Kiushu ； not rare. 



2. Dideodes formosanns Mats. 

 Syrphns formosanns Mats. Die Schäd. u. Nütz. Ins. Zuck. For- 

 mosas p. 46， PL XXIX， % 8 % (1910). 

 Didea formosana Mats. ― Thous. Ins. Jap., Addit. Vol. II. p. 217, 



Fl. XVI, %. 27 (T916). 

 Much resembles to 33. latus CoQ., but differs from the latter in the 

 following characters : 

 % I. Body somewhat longer and narrower- 



2. Front above the antennae more densely black pubescented. 



3. Mesonotum darker, on the sides and at the hind margin with an 



aeneous shade. 



4. Scutellum fuscous pubescented. 



5- Abdominal bands narrower, the 2nd segment with a broad trian- 

 gular spot near the base. 

 6. Coxae, trochanter and apices of the femora black. 

 Length ― ^ 16 mm. 



Hab. ― Formosa (Taihoku, Tainan, Tappan). 



