82 FAUNA HAWAIIEKSIS 



Fam. SYRPHIDAE (p. 19). 



Eristalis Latreille (p. 19). 



(2) Eristalis punctulahis IMacquart. 



Eristalis punctulatus Macq., Dipt. Exot. 2" Suppl. p. 59 (1847). 



A male of what I take to be this species, originally described from Australia, was 

 taken at Honolulu in June 1900. It is evidently an importation. 



EuMERUs Meigen. 



(i) Eumems viarginattis, sp. nov. 



J. Long. Corp. 'j^ mm. ; al. 5^ mm. Front black with a slightly metallic tinge, 

 clothed behind with yellowish hairs, in the middle with black hairs, and in front with 

 yellowish-grey tomentum ; face black, covered with long whitish pubescence ; eves bare, 

 meeting for a short distance in front, the facets in this portion being much larger than 

 in the rest of the eyes. Antennae blackish-brown, sometimes the 3rd joint, which is 

 comparatively large, a little lighter, arista long and stout. Thorax bronzy or iridescent- 

 black, the suture and two dorsal longitudinal lines more or less tomentose ; scutellum 

 blackish or bronzy, with a very conspicuous yellow margin which is formed by a 

 transverse and somewhat crenulated depression running round the disc : thorax and 

 scutellum both coarsely punctured and covered with almost golden-yellow pubescence 

 which is much longer around the margin of the latter. Abdomen black, shining and 

 punctured, with a purplish or bronzy metallic tinge : ist, 2nd, and 3rd segments each 

 with a pair of whitish tomentose lunules, those of the ist segment small and indistinct, 

 4th segment more bronzy and covered with thick whitish pubescence, which is also 

 present at the basal angles of the ist segment. Legs black with a greenish metallic 

 tinge, the knees, base of the tibiae, the anterior and intermediate tarsi yellow, posterior 

 legs with the femora much swollen, the tibiae much enlarged in their apical half, and the 

 tarsi also enlarged, all the legs covered with whitish pubescence. Wings with a slight 

 brownish tinge, subapical transverse vein much angulated, so that the cell it closes has 

 a pointed projection, while the vein itself has an appendage at the angle. 



Hab. Oahu, 4 males taken at Honolulu, in June 1900. 



Note : — Although I cannot find any published description which fits this species it 

 is with some hesitation that I here describe it as new. It may be an importation from 

 Australia — the genus does not occur in America, so far as I am aware. 



