DIPTERA 33 



segment with a large triangular greyish patch which leaves only the anterior angles 

 yellow and a pair of widely separated blackish spots on the dorsum, third and fourth 

 segments entirely grey, each with a pair of spots like those on the second, apical segment 

 grey, unspotted, genitalia reddish-brown, all the segments with long bristles at the sides, 

 the three last with bristles on the dorsum also. Legs yp How, tarsi and the tips of the 

 hind femora darker, all the femora armed with strong bristles, fore and intermediate 

 tibiae with three apical and one subapical bristle, the latter also with a median bristle 

 behind, posterior tibiae with about ten bristles (including the apical ones) arranged in 

 several rows. Wing^s clear, teg^ulae arrevish-white. 



Hab. Hawaii, one male, Olaa, July 1895. 



(2) Cociiosia soiiinigra, sp. nov. 



Z- Long. 3^ mm. ; al. 3 mm. Front one-third of the width of the head, central 

 stripe dusky yellow, becoming reddish-yellow near the base of the antennae, orbits and 

 vertical triangle lighter with brightish yellow, almost golden, tomentum, face and palpi 

 light yellow, antennae entirely yellow, basal joints somewhat darker than the third, arista 

 dark brown, lighter towards the base and distinctly pubescent on its basal half. Thorax 

 yellowish-grey with two presutural dorso-central bristles, halteres light yellow. First 

 segment of abdomen bright yellow with a large subtriangular dorsal brown spot, second 

 segment with a much larger brown spot which leaves only the anterior angles, the 

 extreme lateral edge and a very narrow hind margin yellow, third segment wholly 

 blackish, shining, with a yellowish narrow hind margin, iourth segment shining black, 

 genitalia in the single specimen obtained exposed and of complicated structure. Bristles 

 of body long and conspicuous, arranged as in C. fiavobasalis. Legs with the coxae, 

 femora and tibiae entirely light yellow, tarsi much darker with the apical joints blackish, 

 fore femora with three rows of bristles, intermediate femora with a row of bristles 

 beneath and a single lonsf and fine bristle on the hind surface a little before the middle, 

 hind femora with numerous bristles behind and beneath, arranged in three rows, fore 

 tibiae with three bristles at or near apex and a single median outer one, intermediate 

 tibiae with six apical or subapical bristles, one outer median and one short bristle on the 

 outer side at about one-fourth from the base, posterior tibiae with about ten bristles 

 arranged in several rows as in C. fiavobasalis. Wings slightly greyish tinged, veins 

 dark, except at the extreme base, tegulae yellowish. 



Hab. Hawaii, Kilauea, July 1S95, one male. 



(3) Coenosia dexioides, sp. nov. 



Z- Long. 6 mm. ; al. 6 mm. Front one-fifth of the width of the head, central 

 stripe reddish-brown, orbits and vertical triangle with yellowish-grey tomentum, face light 

 F. H. III. S 



