176 KANSAS UNIVERSITY SCIENCE BULLETIN. 



Sepsis petulantis, n. sp. 



Male : Head shining black ; front with a shallow median 

 sulcus anteriorly, a pair of ocellar, and two pairs of verticals 

 present ; antennae yellow, median carina distinct ; cheeks and 

 occiput below, yellow, oral margin fringed with a row of short 

 black hairs ; mouth-parts yellow. Thorax black ; mesonotum, 

 except a spot on anterior margin between humeri, subopaque 

 gray, one humeral, two posthumeral, one supraalar, one post- 

 alar, and one dorsocentral bristle on each side ; scutellum sub- 

 opaque, with an apical pair of bristles ; pleuriie shining on upper 

 half, silvery on lower, yellowish just below humeri ; halteres 

 yellow. Front cox?e and legs wholly yellow, their femora with 

 the usual tubercle, upon which are situated four small spines, 

 and proximad to which is a much stronger spine ; the swelling 

 at base of anterior tibiiie small ; four hind legs yellow, cox?e at 

 base, femora just beyond middle, middle tibicie at base, hind 

 tibiae and tarsi largely blackish ; the femora and tibiae each 

 with a single bristle underneath. Abdomen shining black, 

 third, fourth and fifth segments with a pair of submarginal 

 bristles. Wings hyaline, with a spot at base of first vein and 

 another at apex of second. Length, 2.2 mm. 



One specimen ; April. 



Sepsis rufa ? 



Sepsis rufa Macq., Dipt. Exot., Suppl. IV, 296. 



A single male specimen, which I doubtfully refer to this spe- 

 cies. Besides the two pairs of dorsocentrals there are two 

 posthumeral, two supraalar, and a mesopleural bristle on each 

 side, and the scutellum has an apical pair of bristles. Middle 

 and hind tibiae with only two bristles near center. Otherwise 

 it agrees with Becker's description of rufa in his "^Egyptische 

 Dipteren." 



Amydrosoma. 



( Becker, ^Egyptische Dipteren. 140.) 



Amydrosoma discedens. 



Amydrosoma discedens Becker, 1. c, 141. 



One specimen of this elegant sepsid, collected in May. 



