MancJicstcr Memoirs, Vol. xliv. (1900), No. 15. 107 



received on the outer side of the transverse basal. Petiole 

 as long as the second and third segments united ; from 

 the middle it becomes gradual!}' dilated; the small round 

 spiracles arc placed shortly beyond the middle; the upper 

 part of the sides are keeled to the spiracles ; the lower 

 part keeled to the end ; the gastrocoeli are obsolete ; the 

 segments become gradually wider towards the apex. 



The basal two joints of the flagellum are equal in 

 length ; the mesopleura bulges out broadly in the middle 

 and is broadly depressed behind ; its base has an oblique 

 slope, and is keeled on the top. The antennae are placed 

 high up on the face, opposite the eye incision ; above them, 

 on the lower part of the front, is a distinct projection 

 which is widened above ; the top deeply depressed in the 

 middle ; the labrum is not exserted. Metanotum not 

 areolated. Ocelli large, placed in a triangle. Abdomen 

 smooth and shining, the second to fourth segments equal 

 in length. The basal joint of the anterior tarsi is incised 

 at the base ; the apical joint is as long as the basal ; the 

 middle ones short and thick ; the calcaria stout, reaching 

 to the middle of the metatarsus. 



Belongs to the TrypJwnidcs and comes near to 

 Exochus, but is abundantly distinct from anything 

 described. 



AlTHRIS CCENUTUS. Sp. 710V. 



Niger; antennis riifo-teshiceis,fc!noribics, tibiis tarsisque 

 anticis, basique tibiamm posterionnn, diuiidio apicali 

 scgvienti abdoiiiiiiis sccnndi seguicntoqiie j-o fiavis ; alis 

 hyalinis, stigmate nervisque fiiscis. S . 



Long. 7 mm. 



Antennae as long as the body, rather stout, not taper- 

 ing much towards the apex ; thickly covered with short 

 pale hair. Head black ; the apex of the clypeus, and 



