﻿THE ENTOMOLOGICAL MAGAZINE 



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3. Melithreptus formosanus Mats, (n.sp.) PI. I, fig. i6， 



ビ. A small species which resembles much to M. taeniatus Meig., 

 but differs from the latter as follows : 



Black. Face pale yellowish, shining, antennae yellowish, the thira 

 joint at the apex somewhat infuscated, the arista fuscous, at the base 

 yellow, vertex black, with fuscous hairs behind, upper cheeks silvery 

 white pubescented. Thorax with 3 black stripes, on the sides and the 

 scutellum pale yellow, the lateral stripes of the thorax not reaching to 

 the scutellum. The fifth abdominal segment black, polished, on each 

 side with a yellow spot. Hypopygium yellow, above on each side with 

 a greenish black hook-like projection. 



Length — ビ 6 mm.; exp. 11 mm. 



Hab. ― Formosa (Heirinbi ； ； quite rare. 



Jap. name -— Taiwan- hime-hirataabu. 



4. Melithreptus ogasawarensis Mats, (n.sp.) PI. I, fig. 17, ビ. 



ビ. Face pale yellow, front somewhat deeper in color ； antennae 

 ochraceous. tip of the third joint and the arista somewhat infuscated, 

 vertical triangle black, polished ； occiput grayish white, with fulvous 

 hairs. 



Thorax greenish black, polished, with white lateral stripes, covered 

 with fulvous hairs ； scutellum yellow, at the base very narrowly fuscous, 

 in the middle a brown shade, with pale yellowish hairs. 



Abdomen black, at the apical half pale brown , the second, third and 

 fourth segments each with a yellowish band, that of the second in the 

 middle being widely interrupted. The venter yellow, with two brown 

 points. Legs yellow, coxae brown, near the tip of the hind femur and 

 in the middle of the hind tibiae each with a brown spot, 2 apical joints 

 of the hind tarsus being brownish. Halteres yellow. Winers hyaline, 

 somewhat shorter than the abdomen, the veins fuscous, stigma silvery- 

 white. 



Length ― ビ 8 mm. ； exp. 1 1.5 mm. 

 Hab. — Bonin Island (リ gasawara-jima). 

 Jap. name —— Ogasawara-hime-hirataabu. 



