DIPTERA 53 



reddish-yellow, the former sh'ghtly upturned and about as long as the last abdominal 

 segment. Legs coloured much as in /. pcrkiiisi, the fore femora with bristles as in that 

 species, the fore tibiae without conspicuous hairs. Wings similar to those of /. perkinsi, 

 but the costa not arched, the tips of the second, third and fourth longitudinal veins in- 

 fuscated and a patch of fuscous in the marginal cell near the termination of the first 

 longitudinal vein. 



Hah. Oahu, one female, Kawailoa gulch, April 1893. 



(4) Idioiiiyia picta, sp. nov. 



%. Long. corp. 5 mm. ; al. 6 mm. Front light yellow in front, reddish-yellow 

 behind, in one specimen entirely of the latter colour, orbits as far as the anterior 

 fronto-orbital bristles and vertical triangle blackish with yellowish-cinereous tomentum, 

 face light yellow, proboscis and palpi black, antennae black, the apex of the second 

 joint more or less pale, arista with only four or five hairs on the upper surface and 

 two or three on the apical half of the lower surface, without pubescence. Thorax 

 yellowish-cinereous before the suture and almost entirely blackish-brown behind, the 

 dark portion sending forward two central lines which e.xtend a little in front of the 

 suture, opposite their termination on each side is a small isolated dark spot, while 

 external to the two central lines the dark colour is indented b)- the lighr ground-colour, 

 humeri bright yellow, pleurae dark yellowish-cinereous, scutellum blackish on the dorsum 

 with bright yellow margins, metanotum dark cinereous, halteres yellow. Abdomen 

 shining blackish, ovipositor dark reddish-yellow. Legs obscure yellowish, fore femora 

 more or less dark brown and the tips of the others slightly infuscated. Wings hyaline 

 with a brownish tinge in the marginal cell, a small fuscous patch over the termination 

 of the first and junction of the second and third longitudinal veins, the tips of the 

 second, third and fourth veins broadly infuscated, transverse veins and apical portion of 

 the penultimate section of the fourth vein also broadly infuscated ; the outer of the 

 transverse veins between the third and fourth longitudinal veins distinctly beyond the 

 posterior transverse vein, the latter directed outward and straight, the outer posterior 

 ano-le of the discal cell therefore less than a riyht ansjle, costa not arched, venation 

 otherwise as in the preceding species. 



Hab. Maui, three females, Haleakala, above 5000 ft., October 1896. 



Hypenomvia, gen. nov. 



Front broad and almost parallel-sided, with three fronto-orbital bristles on each 

 side of the posterior half the lowest one pointing forward, and the other two backward, 

 the middle one much the smallest, two vertical bristles near the upper angle of the eye, 



