SEPEDON. 125 



and a little removed from the orbit. Antennae of the color of the 

 head ; the second joint, although elongated as in the other species 

 of Sepedon, is broad as in Tetanocera and with black hairs ; the 

 third joint a little darker, rather acutely ovate, blackish at the tip. 

 Antennal bristle white at the tip, and with a white pubescence, its 

 two first joints and the base of the third being black. Upper 

 side of the thorax in well-preserved specimens with a brown 

 longitudinal stripe on each side ; its middle is fine whitish hoary, 

 and marked with four darker lines not quite reaching the hind 

 border of the thorax, the innermost being by far more distinct. 

 The scutellum, too, the greatest portion of the pleurae and the 

 coxae are whitish hoary. Abdomen rather glossy, with a very 

 slight vestige of whitish hoar. Legs pale chestnut-brown, hind 

 femora with the apical half darker, and the greatest part of the 

 under side beset with rather scattered black spine-like bristles ; 

 the anterior and posterior tibiae at the tips and the tarsi blackish, 

 the middle tarsi chestnut-brown at the base. The very delicate 

 black hairs on the upper side of the posterior tibiaa are much 

 longer in the male than in the female, and in general longer than 

 usual in the species of this genus. Wings clouded with dark 

 smoky brown, more yellowish-brown towards the costal border ; 

 the transverse veins with narrow blackish margins ; the posterior 

 transverse vein is considerably arcuated and has a very oblique 

 position. 



Hab. Middle States. (Osten-Sacken.) 



2. S. niacropus WALK. . Testaceus,antennarumarticulosecundo 

 tenui, femoribus posticis longissimis, gracilibus, fusco-annulatis. 



Yellowish-red, second antennal joint narrow, posterior femora very long, 

 slender, and marked with a brown ring. Long. corp. 0.3. Long. al. 

 0.35 lin. 



SYN. Sepedon macropus WALKER, List Dipt. IV, 1078. 



Yellowish-red, with the inferior portion of the pleura as well 

 as the hips having a bright white reflection. Front without lateral 

 spots. Face glossy ; below each antenna is a black spot distant 

 from the orbit and surrounded with a white reflection on the pol- 

 ished face ; another spot with bright white reflection runs from 

 the under side of the eyes down the cheeks. Antennae yellowish- 

 brown ; the second joint is slender and dark brown towards the 



