126 DIPTERA OF NORTH AMERICA. 



tip ; the third joint blackish with the antennal bristle beset with a 

 very short pubescence. Thorax with a rather distinct reddish 

 ferruginous middle stripe continuing over the scutellum (it may be 

 more marked in better preserved specimens). The abdominal 

 segments each with a browner margin of the hind border. Legs 

 very elongated with very short spine-like hairs; the bristles on the 

 under side of the very long, straight, not thickened hind femora 

 are likewise very short; the hind tibiae slender and almost straight. 

 Color of the legs brownish-yellow, the tips of all femora being 

 brown and the posterior femora having besides a brown ring on 

 their last third ; the anterior and middle tibia? have only brown 

 tips ; the posterior tibiae are quite brown with a very broad 

 brownish-yellow ring before the tip; middle tarsi yellowish-brown, 

 more blackish-brown towards the tip ; hind tarsi quite dark brown. 

 Wings clouded with brown; posterior transverse vein slightly 

 curved, not very steep. This description has been taken from a 

 rather old specimen. 



Bab. Jamaica; (Walker.) Cuba; (Poey.) 



3. S. armipes Loew. % and 9. — Brunneus, antennarum articulo 

 secundo tenui, femoribus posticis incrassatis, in niare subtus profunde 

 excisis et prope basim bidentatis. 



Brown, second antennal joint slender, bind femora thickened, in tbe male 

 with a deep excision on the under side and two teetb near tbe base. 

 Long. corp. 0.18. Long. al. 0.18. 



Syn. Sepedon armipes Loew, Wien. Ent. Monatscb. Ill, 298. 



Not dissimilar to Sep. spim'pes, but darker and somewhat smaller. 

 Head pale yellowish, with the front and upper part of the occiput 

 brown, the former having a black spot on each side near the orbit 

 and a black dot below each antenna a little removed from the 

 orbit. The two first joints of the antennas brownish-yellow, the 

 second attenuated as in most species of this genus; the third more 

 or less lanceolate, black with the base only yellow. The first 

 and second joints of the antennal bristle dark yellow, the third 

 with the base blackish, the remainder being white with very short 

 white pubescence. Upper side of the thorax finely hoary in the 

 middle, on which some dark longitudinal lines are visible. Pleu- 

 ra? dusted with white. Abdomen rather glossy, pale chestnut- 

 brown or almost yellowish-red at the tip. Legs brownish-yellow, 

 the femora paler, especially towards the base; the hind femora are 



