ADAMS : DIPTERA AFRICANA. 173 



becomes transverse ; face shining, with two sublateral black 

 spots, three small bristles on lower part of sides ; first joint of 

 antennae twice as long as second, second with a strong bristle 

 above, third, compared with Becker's figure of seticornis, is not 

 so broad at base, and less acuminate at apex, arista black ; palpi 

 black, clypeus visible ; occiput with brownish line running from 

 near upper angle of eye to neck. Thorax yellow, mesonotum 

 with two subdorsal, two sublateral, and two lateral reddish- 

 brown vittcT, with one humeral, two posthumeral, one pre- 

 sutural, two supraalar, one postalar, two rows of dorsocentrals 

 containing three each, and a pair of prescutellar bristles, there 

 are four rows of small bristly hairs, the two central ones be- 

 tween the two subdorsal vittse ; scutellum yellow, with four 

 bristles ; metanotum with two black spots, hal teres yellow ; 

 pleura? yellow, with a longitudinal brown vitta, one meso- 

 pleural, and one sternopleural bristle present. Legs yellow, 

 tarsi fuscous. Abdomen yellow, tinged with brown. Wings 

 hyaline, with a faint tinge of brown, cross-veins not clouded, 

 costa reaches tip of fourth vein, its third section is about one- 

 third as long as its second, and a little shorter than the penulti- 

 mate section of the fourth vein. Length, 3,2 mm. 

 Two specimens. April. 



Lauxania. 



(Latreille, Hist. Nat. des Crust, et des Ins.. XIV, 390. 1804.) 



Lauxania elisse. 



Lauxania elisse Meig., Syst. Beschr., 297, 2. 



I have not seen this species before, but there is a specimen in 

 the collection which agrees quite well with the description. 

 Along with this one is another, differing only in the yellow front 

 coxse and femora. Both specimens were collected during 

 October. 



SEPSID^. 

 Sepsis. 



_ . (Fallen. Ortalidae, 20; 1820.) 



Sepsis hirtipes. 



Sepsis hirtipes Becker, ^gyptische Dipteren, 142. 



Three specimens, agreeing with Becker's description, save 

 that the black of the abdomen is a little more profuse. Col- 

 lected in May. 



