DIPTERA 59 



(4) Drosophila pcrkinsi, sp. nov. 



J ^. Long. Corp. 2:^ — 3 mm. ; al. 3 — 3^ mm. Front yellowish-brown, orbits and 

 vertical triangle lighter ; face yellowish-grey with a distinct keel. Antennae yellow 

 with the third joint dark brown ; proboscis yellow, palpi black. Thorax yellowish- 

 cinereous becoming reddish-brown behind, with three narrow central brown lines, the 

 middle one reachino; the anterior edoe, the others abbreviated in iront and more or 

 less interrupted at the suture ; lateral edge and a broaei band on the pleurae dark 

 brown, pleurae otherwise yellowish ; metanotum yellowish- or reddish-brown, scutellum 

 dark brown above, yellow at the sides, halteres yellow. Abdomen dark brown, the 

 posterior edges of the segments yellowish-cinereous. Legs yellowish with dark femora, 

 two hind pairs of tibiae with very slight traces of brown rings near the base and 

 tip, and the tarsi, especially the front pair, more or less darkened. Wings hyaline 

 with a broad fuscous border beginning just beyond the termination of the ist longi- 

 tudinal vein and running round as far as the anal cell, in the three posterior cells 

 the inner margin of this dark edging is irregularly sinuate, the two transverse veins 

 conspicuously blotched with fuscous and a large fuscous spot in the ist posterior 

 cell just over the end of the discal cell ; 2nd longitudinal vein very slightly curved 

 and the 4th quite straight. 



Hab. Hawaii, two males, Kilauea, August 1S96. — Oahu, one female, Waianae, 

 coast, January 1897. 



Plate III. fig. 12, wing. 



(5) Drosophila cousptaia. sp. nov. 



$. Long. Corp. 5 mm. ; al. 6 mm. Front yellowish-brown, orbits and vertical 

 triangle lighter, space between the ocelli black, occiput with three black stripes ; 

 face light yellowish-grey, without keel, cheeks, lower part of occiput, proboscis and 

 palpi light yellow. Antennae brown, somewhat yellowish beneath. Thorax yellow 

 with four black lines, pleurae yellow, scutellum dark brown with only the lateral 

 angles yellow, metanotum yellow with faint brown central stripe, halteres yellow. 

 Abdomen shining black, with four pairs of yellow subquadrate spots situated at the 

 anterior angles of the first four segments, those of the first segment hardly distinct 

 from the anterior border which is also yellowish. Legs yellow, tip of fore and 

 intermediate tibiae and base and tip of the posterior tibiae slightly infuscated, the 

 last joint of all the tarsi also dark. Wings hyaline, marginal cell infuscated for the 

 greater part of its length, the infuscation extending over the 2nd longitudinal vein, 

 but leaving a spot at the termination of the ist longitudinal vein and another before 



8—2 



