DIPTERA 3 



broader than long. Face and palpi with white tomentum, vertex and occiput shining 

 black. Thorax dark fuscous, almost black, collar and shoulders whitish, pleurae dark 

 and shining, whitish beneath the shoulders, scutelluni and metanotum dark, halteres 

 with pale stem and nearly black knob. Abdomen dark, segments two to five with 

 a yellow posterior border. Coxae dark, those of fore and intermediate legs paler 

 towards the apex, fore femora and all the tibiae testaceous, hind femora and all the 

 tarsi dark brown. Wings longer than the body, hyaline, apices and hind margins 

 tinged with fuscous, costal, subcostal and marginal cells dark fuscous. Costal vein 

 extending beyond the junction with the third longitudinal vein half the distance from 

 that point to the tip of the anterior branch of the fourth longitudinal, auxiliary vein 

 terminating opposite the origin of the third vein, first longitudinal vein ending opposite 

 the end of the sixth longitudinal vein, anterior branch of third vein terminating in 

 the costa at two-thirds of the distance from the tip of the first to the tip of the 

 posterior branch of the third vein, furcation of fifth and sixth veins opposite the 

 origin of the third vein, seventh vein short but distinct. 



H.\B. Hawaii, Kilauea, August 1896, a single female. — Maui, a specimen without 

 abdomen (? sex) from Haleakala, 5000 ft., October, 1896. 



Plate I. figs. 2 — 3, wing, and base of % antenna. 



(2) Platyura hawaiiensis, sp. nov. 



Long. Corp. ,? ? 5 millim. ; al. t 4, % 5 — 6 millim. 



Antennae in Z about twice as long, in $ about as long as the thorax, brownish- 

 black, with the first two and basal half of the third joints yellow, in ^ the joints 

 at the base of the flagellum twice as long as broad, towards the apex more slender, 

 and at least three times as long as broad, all covered with a short regular pubes- 

 cence, in % all the joints a little longer than broad and more uniform. Thorax 

 reddish-yellow, black-haired, with two broad lateral black stripes which are abbreviated 

 in front, leaving the humeri yellow, but confluent behind, metanotum dark, scutellum 

 dark in two of the specimens but lighter in' the third, halteres yellow. Abdomen 

 of ,? slender, clavate, of ? broader, first segment wholly yellow or reddish-yellow, 

 second yellow with the basal half blackish, succeeding segments blackish with broad 

 yellowish posterior bands. Legs pale, apices of tibiae and the whole of the tarsi 

 dark. Wings hyaline, with the apices and hind margins tinged with fuscous, sixth 

 vein slightly clouded ; auxiliary vein terminating a little before the origin of the third 

 vein, the venation otherwi.se very like that of the preceding species. 



Hab. Hawaii, Olaa, July 1895, one male ; Kilauea, one female, September 1895 ; 

 Kona, one female, 4000 ft., September 1892. 



Plate L fig. 4, base of t antenna. 



I — 2 



