2 FAUNA HAWAIIENSIS 



LImnobiidae are represented by at least nine species, including one belonging to the 

 very interesting genus Styringomyia, originally founded upon specimens preserved in 

 copal. It is curious, and perhaps significant, that the Orthorrhapha Brachycera, an 

 important section of the order, are very sparsely represented (including only an 

 unidentified species of Sargus, 1 1 Dolichopodidae, and an imported species of 

 Scenopimts). The Tabanidae are dependent upon the presence of mammals, and 

 hence their absence is easily accounted for, but it is somewhat astonishing that not 

 a single specimen belonging to the large families Asilidae, Bombyliidae, or Empidae 

 has yet been obtained. 



Fam. MYCETOPHILIDAE. 



SciARA Meigen. 



(i) Sciai'a violokaiensis, sp. nov. 



%. Long. corp. i^^mm. ; al. 2^^ mm. Antennae blackish, joints of scape lighter, 

 those of flagellum sessile, twice as long as broad. Head black, palpi yellow. Thorax 

 black, shining, humeri yellowish, pleurae yellowish, but dark above the intermediate 

 coxae, halteres yellowish with dark club. Abdomen reddish-brown, hind borders of 

 the segments, especially of the apical ones, darker, venter yellow. Legs pale, all 

 the coxae and femora yellow, the latter with a black spot at the extreme base, tibiae 

 yellowish with the spurs conspicuous and whitish, tarsi brownish, becoming darker 

 towards the tip. Wings greyish hyaline, costal and first and third longitudinal veins 

 darker and stronger than the rest, first longitudinal vein ending at half the length 

 of the wing, before the base of the fork and opposite the tip of the sixth vein ; 

 distance between the tips of the first and third veins four times that between the tip 

 of the third vein and the termination of the costal ; anterior branch of the fork 

 ending midway between its posterior branch and the tip of the third vein ; termi- 

 nation of the fifth vein midway between the posterior branch of the fork and the 

 sixth vein ; furcation of fifth and sixth veins near the base of the wing and con- 

 siderably before the origin of the anterior cross vein. 



Hab. Molokai Mts., 6500 ft, September 1893, one female. 



Plate L fig. I, wing. 



Platyura Meigen. 



( I ) Platyura fuscocostata, sp. nov. 



%. Long. Corp. 6 mm. ; al. 6^ — 7 mm. Antennae short and broad, first, second 

 and basal half of third joints yellow, remaining joints dark brown, third joint elongated, 

 more than twice the length of the succeeding joints, which are sessile and a little 



