72 FAUNA HAWAIIENSIS 



pleurae and metanotum shining black, scutellum blackish, not quite so highly polished 

 and with yellow apex, halteres reddish fuscous. Abdomen black with the apical segment 

 and lateral margins shining. Legs yellow. Wings hyaline, last section of the fourth 

 vein about half as long again as the penultimate, posterior transverse vein straight. 



Hab. Lanai, one female, 2000 ft., December 1893. 



From this species I can hardly separate a specimen from Kona, Hawaii, taken at 

 a height of 5000 ft. in July 1892 and another from Olaa in the same island obtained in 

 July 1895. They are both smaller than the type, the former having the abdomen 

 shining throughout and the halteres yellow, the latter also with yellow halteres and the 

 thorax and pleurae somewhat lighter. If distinct their description must be deferred 

 until fuller material is obtained. 



(38) Drosophila obscurifrons, sp. nov. 



Z. Long. corp. 2 — 2\ mm. ; al. 2\ mm. Front black, the orbits, the vertical 

 triangle and a central line a little lighter ; face blackish, with a slight keel ; proboscis 

 and palpi yellowish ; antennae dark brown, arista with three hairs above but none below, 

 apex of second joint and base of third sometimes lighter. Thorax blackish-brown, 

 pleurae olivaceous or dark cinereous, scutellum and metanotum blackish-brown, the 

 latter shining, halteres light yellow. Abdomen blackish, the last segment shining. 

 Legs yellowish, the femora and the tips of the tarsi a little darker. Wings hyaline, last 

 section of the fourth vein about half as long again as the penultimate, posterior trans- 

 verse veins straight. 



Hab. Molokai Mts., three males, 5000 ft., August and September 1893. 



(39) Dj'osophila exigtia, sp. nov. 



t ?. Long. corp. 2 mm. ; al. 2 mm. Very similar to D. obscurifrons, but differs 

 as follows : the front distinctly reddish-yellow near the antennae, the latter much lighter, 

 with the second joint reddish-yellow or only darkened above, the legs lighter yellow 

 with the femora pale or only slightly darker. Wings with the last section of the fourth 

 vein about twice as long as the penultimate. 



Hab. Hawaii, Kilauea, one male, July 1896; Kona, one male and one female, 

 4000 ft., July 1892. 



(40) Drosophila pluinosa, sp. nov. 



t ?. Long. corp. 2 — 2\ mm. ; al. 2^ — 3 mm. Similar to D. obscurifrons, but the 

 front lighter, sometimes obscure reddish-yellow, arista of the antennae with at least six 

 hairs above and three below, thorax lighter, olive-brown, halteres paler, almost creamy. 



