DIPTERA 43 



HoPLOGASTER Rondani. 



(i) Hoplogastcr {^) diibia, sp. no v. 



Long. Corp. 3 — 3^ mm. ; al. 2-^ — 3 mm. Front one-third of the width of the head, 

 reddish-yellow anteriorly, darker behind, orbits and vertical triangle with cinereous 

 tomentum, cheeks and chin with a yellowish tinge, antennae short and thick, the two 

 basal joints reddish-yellow and the third joint blackish, arista bare and dark. Thorax 

 cinereous, with j presutural and 3 post-sutural dorso-central bristles, scutellum cinereous 

 with reddish-yellow apex, halteres yellow. Abdomen variable in colour, in some speci- 

 mens dark cinereous, in others with more or less of a reddish-brown or even reddish- 

 yellow tinge, fourth segment in the male with hind marginal bristles, otherwise without 

 conspicuous bristles, genitalia of the t rather prominent. Legs yellow with black tarsi, 

 fore femora with a row of bristles above, intermediate femora with three subapical 

 bristles above, hind femora with a few bristles near the apex above and below, tibiae 

 with large apical and subapical bristles, the hind pair also with two pairs on the outer 

 surface and a single bristle on the inner surface just beyond the middle. Wings hyaline, 

 veins yellowish, anterior transverse vein a little before the termination of the first 

 longitudinal, anal vein short, tegulae small, subequal, transparent with reddish-yellow 

 margins. 



Hab. Hawaii, two males and four females, Olaa, July 1S95. 



On account of the small, subequal tegulae I have placed this species provisionally 

 in the genus Hoplogaster Rond., although I do not feel quite satisfied that such is the 

 correct position for it. 



A Jithomyidae, spp. 



Three species, each represented by a single female specimen, appear to belong to 

 the Cocnosiinae, but in the absence of better material it is wiser to defer their description. 

 They were obtained at Haleakala (Maui), Koholuamano (Kauai), and Kawailoa gulch 

 (Oahu) respectively. 



Fam. SCIOMYZIDAE. 



SciOMVZA Fallen. 



( I ) Sa'omyza, sp. 



A specimen belonging to this genus, without antennae and otherwise in too poor a 

 condition for description, was obtained on the coast at Waialua, Oahu, in February 1893. 



6—2 



