88 MK. 1. O. HOWAED ON THE PAEASITIC HTMENOPTEBA 



and 6 and the club ; terebral sheaths and tip of pygidium below 

 black, as in C. terebratus. 



Described from one female specimen. 



^NASius, Walker. 



This genus, proposed by Walker in 1846 for his Encyrtus 

 hyettus, has never been suflSciently described, and is not 

 recorded in any of the nomenclators. I have little or no doubt, 

 however, of the identity of a peculiar form contained in the 

 collection with E. hyettus, and have therefore drawn up the 

 following full generic description : — 



§ . [Resembles in general appearance the female of BotJirio- 

 tTiorax. Antennae strongly clavate ; scape rather short, reaching 

 only to middle of eye, with a very broad, leaf-like, inferior ex- 

 pansion ; pedicel, f unicle, and club together forming a regular 

 ovate, clavate mass, slightly flattened towards tip and rapidly 

 widening from the very narrow base of the pedicel to the articu- 

 lation of the first and second joints of the club, thence gradually 

 rounding off; each of the six funicle-joints much wider than long : 

 club nearly as long as entire f unicle. Antennal grooves deep, 

 converging ; eyes very large, hairy, mainly lateral ; genal sulcus 

 distinct, complete ; front rather narrow above, widening rapidly 

 below ; ocelli forming a neaiiy equilateral triangle, lateral ocelli 

 touching border of eyes ; entire head except occiput and facial 

 depression, covered closely with large thimble-like depressions, 

 each with a very minute central piliferous tubercle ; occipital 

 ridge very acute. Pronotum not visible in the specimen at hand : 

 mesoscutum short ; mesoscutellum large, long, acutely margined, 

 rounded posteriorly, having a fine, sharp, longitudinal groove for 

 about one fifth its length at base ; scapular sutures absent, 

 represented only by very faint depressed lines, visible only in a 

 strong light, but which can then be traced with difficulty and 

 indicate that the scapulae are well separated at tips. Abdomen 

 short, triangular ; terebra not extruded. Submarginal vein of 

 fore wings short ; marginal very short, almost wanting ; stigmal 

 rather long, slender, very slightly curved, extending down at an 

 angle of about 40 degrees with the postmarginal, club very small ; 

 postmarginal somewhat longer than stigmal. Legs of the normal 

 Encyrtine type, rather short ; front tarsi especially short. 



S . Differs from female in following particulars : — Antennae 

 more hairy and not so strongly clavate ; pedicel plainly distinct 



