40 FAUNA HAWAIIENSIS 



(12) Cocnosia rudis, sp. nov. 



$. Long. Corp. 4 — 4^ mm. ; al. 3^ — 4 mm. Front one-third of the width of the 

 head, blackish, orbits and vertical triangle with dull yellowish-grey and face with 

 brighter yellowish tomentum, palpi yellow, antennae reddish-yellow with the apical half 

 of the third joint blackish, arista blackish, pubescent in the basal half. Thorax with two 

 unequal presutural dorso-central bristles, dorsum, pleurae and scutellum cinereous, 

 halteres bright sulphur-yellow. Abdomen cinereous, unicolorous, third and fourth 

 segments with some rather weak hind marginal bristles and all the segments with lateral 

 bristles. Legs yellow, tarsi more obscurely yellow, brownish towards the tip, fore 

 femora with a row of bristles above and a row of longer ones below, intermediate 

 femora with two or three scattered bristles on the fore and hind surfaces, and two sub- 

 apical ones above, hind femora with two rows, fore and intermediate tibiae with the 

 usual apical and subapical bristles, the latter also with an externo-median one, hind 

 tibiae with six or seven strong bristles on the outer and hind surfaces arranged in pairs. 

 Wings clear, veins dark, tegulae yellowish. 



Hab. Maui, two males, Haleakala, 5000 ft., March and April 1894. 



(13) Cocuosia iiigeiis, sp. nov. 



%. Long. corp. 7 — 8 mm. ; al. 6 — 7^ mm. A large and comparatively stout 

 species. Front about one-fourth of the width ot the head, wholly black with the orbits 

 and vertical triangle shining, face blackish with only a slight brownish-grey tomentum, 

 palpi and antennae .entirely black, arista slightly pubescent near the base. Thorax with 

 two unequal presutural dorso-central bristles, dorsum, pleurae and scutellum shining 

 black, shoulders and pleurae with a little greyish tomentum, halteres bright yellow. 

 Abdomen shining black, segments very narrowly edged behind with greyish-white, only 

 the third and fourth segments with conspicuous dorsal bristles, the former with two in 

 the middle of the dorsum and a row along the hind margin, the latter with both dorsal 

 and hind marginal bristles. Legs entirely black and shining, only the fore knees slightly 

 reddish, fore femora with four rows of rather fine, long bristles, intermediate and hind 

 femora each with three rows of similar bristles, the former also with two and the latter 

 with one subapical bristle on the upper surface, fore and intermediate tibiae with the 

 usual apical and a long externo-median bristle, the latter in the fore pair very long, hind 

 tibiae with two long bristles on the outer surface, one long bristle about the middle of 

 the inner surface, one long porrect bristle near the apex of the hind surface, and 

 three or four shorter apical ones. Wings more or less brownish-tinged, especially 

 towards the anterior border, veins dark, tegulae whitish, the upper one darker. 



Hab. Molokai Mts., three females, 4000 ft.. May i893.^Maui, one female, 

 Haleakala, 5000 ft., October 1896. — Hawaii, one female, Kilauea, September 1895. 



