DIPTERA 69 



the segments more or less brown. Legs yellow, the last joint of the tarsi dark. Wings 

 yellowish-hyaline, third and fourth veins parallel, last two sections of the latter equal, 

 posterior transverse vein slightly conve.x. 



Hab. Hawaii, Olaa, one male, December 1896. 



Three specimens with a much darker abdomen and some traces of brown marks on 

 the thora.x, from Kona, Hawaii, 2000 ft., June 1892, are scarcely distinct from the 

 species here described. 



(30) Drosopliila cognahx, sp. nov. 



$. Long. corp. 4 mm.; al. 4^ mm. Very similar to D. xatitkosoma, but larger, 

 the front darker ; ferruginous rather than yellow, with the orbits and vertical triangle 

 shining, antennae brown, with the second joint reddish-yellow beneath. Thorax 

 darker, brownish-yellow ; abdomen dark brown, with the basal angles of the segments 

 yellow ; legs with the last joint of the tarsi yellow ; wings more decidedly tinged 

 with yellow, third and fourth veins slightly convergent towards the apex, posterior 

 transverse vein straight. 



Hab. Molokai Mts., two females, 4000 ft., May 1893. — Hawaii, Olaa, one female, 

 December 1896. 



(31) Drosopliila iiiacqnalis, sp. nov. 



%. Long. Corp. 2 mm. ; al. 2^ mm. Front bright reddish-yellow with the vertical 

 triangle brown ; face and cheeks yellow, proboscis reddish-yellow, palpi yellow with 

 black tips ; antennae entirely reddish-yellow, arista with only about two hairs on the 

 upper side and one below. Thorax reddish-yellow with three broadish brown stripes 

 which coalesce behind, pleurae obscure reddish-yellow, scutellum dark brown, meta- 

 notum shining blackish, halteres light yellow. Abdomen dark brown, with obscure 

 yellowish spots at the basal angles of the segments. Legs yellow, the tarsi slightly 

 darker towards their tips. Wings yellowish-hyaline, 2nd longitudinal vein distinctly 

 curved forwards near the apex, so that the distance between its termination and that 

 of the 3rd vein is twice that between the terminations of the 3rd and 4th veins, the 

 latter parallel, the last section of the 4th vein half as long again as the penultimate, 

 posterior transverse vein distinctly convex. 



Hab. Hawaii, Kona, two females, 4000 ft., August 1892. 



(32) Drosopliila luonticola, sp. nov. 



t, ?. Long. Corp. 2^ — 3 mm. ; al. 3 — 1\ mm. Front brownish-yellow, a trans- 

 verse band behind the antennae bright yellow ; face yellow, proboscis and antennae 



