434 



there an; .numerous short sloping black hairs which on the hind pair 

 are somewhat forming a conspicuous outer dorsal fringe, the spurs oiv 

 the middle pair comparatively large, unequal, : and brown with the tips 

 black; tarsi all- clothed with very tiny:, dense depressed black bristles 

 but on the basal half or more, of the first joint there are very short 

 yellowish hairs especially on . the 'middle pair conspicuous ; the claw.s, 

 black with the base reddish brown, the pulvilli dull yellow. 



Abdomen- slightly longer- than the head and thorax (including 

 the . scutellura) together, and. about the base slightly broader than the 

 latter, gradually narrowed to the broad flat end. Dorsum olive-brown, 

 covered . with a yellowish brown tomentum and with an abundant short 

 depressed conspicuous yellow pubescence which is intermixed with 

 numerous sloping short less conspicuous -black hairs, on the white 

 tomentose sides of , the first two segments there are some long erect 

 conspicuous whitish hairs which becomes shorter on the second 

 segment.. .Underside black, obscured by. a . whitish tomentum which 

 becomes .yellowish brown grey on the. posterior segments, with the 

 very narrow -yellowish segmentations, except on the first and seventh 

 segments, the similar segmentations appearing on the sides of the 

 dorsum, .with a very tiny whitish appressed pubescence but on about 

 the, ..middle part numerous thin inconspicuous longer brownish grey 

 hairs, while on the apical two segments, there are abundant much 

 longer conspicuous black . hairs which some what extend up to the 

 fourth segment about the middle part only, and which on the seventh 

 segment- are almost entirely replaced by erect curved stout bristly 

 hairs. ...-.-. 



. Length '.11 mm. 



This species is easily distinguished from .any other Formosan or 

 Japanese 'Jabanus, by the. yellow legs, the clear \\ings, the greyish 

 black thorax, . the. . olive-brown abdomen, and the frontal callus with a 

 very narrow lineal extension on the very narrow frontal stripe ; on th.e 

 other hand,; it quite differs frpi the allied species, 7~. subkirtus, Ricardo, 



