DIPTERA 57 



36. Face with a distinct broad keel ; size larger (j^) D. cannata. 



„ without distinct keel ; size smaller {jj) D. obscuricornis. 



37. Antennae entirely yellow (j(5) D. varifrons. 



„ partly or entirely dark brown 38. 



38. Scutellum blackish with yellow apex (j/) D. polita. 



,, reddish-brown or dark brown, unicolorous 39. 



39. Arista with only 3 hairs above and none below 40. 



„ at least 6 hairs above and 4 below {40) D. plumosa. 



40. Front entirely blackish-brown •'•(j<?) D. obsairifmns. 



,, yellowish near the antennae, otherwise dark brown (jp) D. e.xigua. 



( I ) Drosophila picticornis, sp. nov. 



^ %. Long. Corp. 3^ mm. ; al. 4 mm. Front rather more than one-third of the 

 width of the head, parallel-sided, dark brown, with the orbits, anterior edge, and a 

 narrow median line lighter. Face obscure yellowish-white with the oral margin 

 distinctly projecting and more yellowish, a distinct black spot at the insertion of the 

 vibrissa, below which are a few smaller bristles ; proboscis black, palpi .''. Antennae 

 blackish with the ape.\ and lower half of the third joint whitish-yellow, which colour 

 is sharply defined ; arista plumose above and on the apical half below. Thorax yellow, 

 with a very broad central stripe, two spots on each side of the latter, a spot on each 

 shoulder, a small spot in front of the base of the wings, two spots and a vertical stripe 

 on the mesopleurae, dark brown ; scutellum yellow with a large double spot on the 

 dorsum dark brown ; metanotum brown and shining, halteres yellow. Abdomen dark 

 brown, with the first segment in the male and four spots on the anterior border of each 

 of the three following secrments vellow. Leo;s lig-ht yellow with the basal two-thirds 

 or so of the femora, two rings on each of the tibiae and the tips of the tarsi dark brown. 

 Wings brown, with numerous single and double hyaline spots. 



Hab. Kauai, one male, Waimea ]\Its., 4000 ft., 1894; one female. Koholuamano, 

 Kauai, April 1895. 



Plate III. figs. 7, antenna, and 8, wing. 



(2) Drosopliila variegata, sp. nov. 



$. Long. Corp. 4 — 5 mm. ; al. 4 — 6 inin. Front brown with the orbits and 

 a narrow median line yellow, vertical triangle black ; face yellow. Antennae yellow, 

 with the upper edge of the second joint brownish and the whole of the third joint 

 black ; proboscis yellow, palpi black. Thora.x light yellow, with a broad central stripe, 

 three spots behind the shoulders, and several spots on the pleurae black, the central 

 stripe continued over the scutellum, which is otherwise yellow ; metanotum yellow, 

 with brown or black central stripe, halteres light yellow. Abdomen black with large 



F. H. III. 8 



