DIPTERA 23 



marginal macrochaetae. Closely resembling the females of D. linibipennis from Molokai 

 referred to above, but smaller, the wings clearer and without trace of yellow at the 

 base. 



Hab. Hawaii, three males and two females, Kona, 4000 — 6000 ft., July — 

 September 1892. 



{3) Dyscritoniyia claripcnnis, sp. nov. 



t. Long. Corp. 6 mm. ; al. 5 — 5^ mm. A small, slender species. Face silvery-white, 

 thorax dark bluish-green, abdomen slender, dark steely or greenish blue, hinder third of 

 each segment blackish, macrochaetae long, two discal and two marginal on second 

 segment, two discal and six marginal on third segment, wings quite clear, alulae pure 

 white, legs as in D. haivaiiensis. 



Hab. Hawaii, two males, Olaa, December 1896 ; one male, Kona, 3000 ft., 

 October 1892. 



(4) Dyscritojuyia fitlgois, sp. nov. 



t,. Long. Corp. 5 mm. ; al. 4^ mm. Brilliant metallic green. Face and frons 

 black with silvery tomentum, vertex shining bluish-green, antennae black, chin polished 

 with a greenish tinge. Thorax and scutellum brilliant metallic green, with long macro- 

 chaetae. Abdomen brilliant metallic green, with a narrow purplish-black band running 

 across the hind border of each segment, macrochaetae long and conspicuous, second 

 segment with a pair of rather small discal ones and a pair of marginal, third segment 

 with a pair of discal and six hind marginal, fourth segment with several strong bristles 

 on the dorsum and sides. Legs black, the femora slightly tinged with metallic green, 

 claws and pulvilli of normal size. Wings clear, very slightly dusky on the costal 

 margin, costal spine absent, posterior transverse vein nearly straight, alulae yellowish- 

 white. 



Hab. Lanai, one male, 2000 ft., February 1894. 



(5) Dysci'itoiiiyia affinis, sp. nov. 



$. Long. corp. 4 mm.; al. 4 mm. Brilliant metallic green like the preceding 

 species, but abdomen with a coppery tinge, and without the dark hind borders to the 

 segments. Wings quite clear, without costal spine, costal margin not dusky, posterior 

 transverse vein with a strong double curve, apical transverse vein more curved than in 

 the preceding species. 



Hab. Oahu, two males, Waianae Mts., April 1892. 



