DIPTERA 



47 



two conspicuous patches of fuscous, the larger one subquadrate, extenchng from the 

 costa to the fourth longitudinal vein, with its inner edge in a line with the posterior 

 transverse vein and generally including only a single hyaline spot which touches exter- 

 nally the tip of the second vein, the other patch much smaller, filling up all but the apex 

 of the third subcostal cell ; from the large fuscous patch three irregular fuscous streaks 

 extend to the posterior margin of the wing, one running over the posterior transverse 

 vein and the other two crossing the middle of the second posterior cell, from the inner 

 edge of the same patch a fuscous streak runs across the submarginal and marginal cells, 

 reaching the costa about opposite the anterior transverse vein. 



Hab. IMaui. This species is represented in the collection by },2) males and 

 28 females, all taken within the crater of Haleakala, at a height of 8000 ft. Two of 

 the males were captured in April 1894, all the other specimens in October 1896. 



Plate II. fig. 25, wing. 



PhaeoCxR.\mma, nov. gen. 



Head in profile subquadrate, front unusually flat and longer than the face, which is 

 slightly concave with the oral margin slightly projecting, chin with a single dark and a 

 few light-coloured bristles, occiput with short stubby setae, one of which occurs also on 

 each side of the front, behind the uppermost fronto-orbital bristles, the latter four in 

 number ; the three anterior pointing forward and the posterior one backward, antennae 

 nearly as long as the face, third joint concave in front and obtusely pointed, arista thick 

 and very slightly pubescent, eyes broadly and obliquely oval, proboscis short and stout, 

 palpi clavate. Thorax with two pairs of bristles on the dorsum, the anterior pair further 

 apart than the posterior, scutellum subtriangular with only two bristles. Abdomen 

 conical. Legs, except the fore femora, unarmed. Wings long and rather narrow, much 

 exceeding the abdomen, costal spine conspicuous, costa slightly undulate, first longitu- 

 dinal vein bristly, third unarmed and parallel with the fourth, the latter in its last 

 section slightly undulate, otherwise quite straight, discal cell long and' narrow, the 

 anterior transverse vein very near its apex, much beyond the tip of the first vein and 

 about two-thirds of the length of the wing from its base, anal cell drawn out into a short 

 point, picture of the wings in the single species described consisting of three transverse 

 bands in the apical half and two bands running longitudinally from the base and uniting 

 with the innermost transverse band. 



Type of genus : P. vittipcnnis, sp. nov. 



The peculiarly flattened front, the bisetose scutellum and the unusual pattern of 

 the wings will readily serve to distinguish this genus from its allies. 



