;,6 FAUNA HAWAIIENSIS 



sutural dorso-central bristles, dorsum, pleurae and scutellum slaty-grey, halteres bright 

 yellow. Two basal segments of abdomen light yellow with a central longitudinal dark 

 brown stripe, which is widened towards the hind margin of the second segment, remainder 

 of abdomen shining blackish with a little greyish tomentum, all the segments with fine 

 lateral bristles, second with a row of fine hind marginal, third with a row running across 

 the middle and a row of rather stronger hind marginal bristles, fourth segment and end 

 of abdomen with numerous bristles, genitalia prominent. Legs yellow with black tarsi, 

 fore femora with a dark brown streak above near the apex, intermediate and hind femora 

 with broad blackish rings at the apex which do not quite meet beneath ; fore femora 

 with a row of strong bristles above and a row of longer ones below, between which are 

 numerous shorter bristles, intermediate femora with two strong bristles near the apex 

 above and a few on the under surface, hind femora with a row above and two rows of 

 somewhat scattered bristles below, fore and intermediate tibiae with four or five apical, 

 and the latter also with a median external bristle, hind tibiae on the inner surface with 

 two bristles, one beyond the middle and the other at the apex, and on the hind surface 

 with about seven long bristles in two rows. Wings slightly dusky towards the apex, 

 with dark veins, tegulae yellowish-white. 



%. Long. 7 mm. ; al. 7 mm. Larger and stouter than the t, front as in that sex 

 but the orbits ferruginous without tomentum, face with yellow tomentum instead of silvery. 

 Thorax and scutellum blackish-brown, rather shining, pleurae cinereous. Abdomen 

 entirely blackish, shining, segments very narrowly edged with greyish-yellow, bristles on 

 median segments as in the $. Fore femora ringed with black like those of the posterior 

 legs. Wings more decidedly dusky, tegulae darker, with yellowish margins. In all 

 other respects like the male. 



Hab. Molokai Mts., one male and one female /;/ cop. and two females, 4500 ft., 

 September 1893 ; one female, 6500 ft., September 1S93. 



(7) Coenosia triangn/i/cra, sp. nov. 



$. Long. 5 mm. ; al. 4^ mm. Front about one-third of the width of the head, 

 dark reddish-brown, orbits and vertical triangle with yellowish tomentum, face with 

 bright yellow tomentum, palpi yellow, antennae dark brown with the base of the third 

 joint yellow, arista dark and subplumose. Thorax with two presutural dorso-central 

 bristles, dorsum, pleurae and scutellum yellowish cinereous, on the dorsum a faint trace of 

 three brown lines, halteres yellow. First two segments of the abdomen yellow, the first 

 with a longitudinal dark brown central line and the second with a large triangular spot 

 of the same colour, the base of which extends almost across the segment, leaving only a 

 narrow hind marginal edging of yellow, third and fourth segments yellowish cinereous, 

 the third with a dorsal anterior and two lateral posterior ill-defined brown spots, all the 



