MONOGRAPH OP THE NORTH AMERICAN PROCTOTRYPID^E. 417 



on the disk and a deep fovea at base ; metascutellum conically promi- 

 nent; metatliorax sliort, woolly, with subacute angles. 



Front wings ample, pubescent and fringed; the submarginal vein 

 terminates in a short punctiform marginal vein, at about one-third the 

 length of the wing; otherwise entirely veinless. 



Abdomen long, conic-ovate, composed of C segments, the petiole 

 longer than thick, fluted, pubescent or woolly ; the second occupies about 

 half the whole surface; the third and fourth very short; the fifth as 

 long as the third and fourth together; the sixth still longer, pointed 

 and stylus-like. 



Legs long, pilose, especially the tibiae, the femora and tibise clavate, 

 the tibial spurs well developed, or at least not weak, posterior tarsi 

 shorter than their tibije, the basal joint scarcely twice as long as the 

 second, claws well developed, falcate. 



This genus is founded upon Diaj^ria cornea Fabr., and is closely allied 

 to Diapria; but the carinated scutellum and the difference in the ab- 

 domen readily distinguish it, not only from this genus but from all 

 others in the group. In tbe carinated scutellum we see the first ap- 

 proach to the cupuliform scutellum in the group Eucoilince, in the fam- 

 ily Cynijyklcv, and like that group, the genus is parasitic, so far as we 

 know, on Dipterous larvne. 



The following table will aid in determining our sjjecies : 



TABLE OF SPECIES. 



FEMALES. 



Abdomen not produced into a long, conical point, although obtusely pointed .. 2 

 Abdomen produced into a long conical point. 



Scutellum with a large fovea at base, the bottom usually with 3 or 4 keels. 

 Antennae rufous, the live or six terminal joints black or fuscous ; legs, includ- 



iug coxjB, rufous T. conica Fabr. 



2. Scutellum with but a single keel at the l)ottom of the fovea, the continuation of 

 the scutellar carina. 

 Antenure, coxse, and middle of femora piceous or blackish. 



Pedicel longer than the first funiclar joint T. carinata Thonis. 



Pedicel much shorter than the first funiclar joint T. torquata Prov. 



Scutellum with the bottom of the fovea slightly aciculated, but the scutellar 

 carina ceases before reaching it. 

 Antennae, coxae, and middle of femora rufo-piceous. 



Club 5-jointed, first flagellar joint nearly twice as long as the pedicel. 



T. siMULANS, sp. nov. 



Antennae, except club, and legs brownish-yellow; club 4-jointed, the first 



three flagellar joints equal, very little longer than the pedicel, the 



second and third shorter than first T, TBTRAPLASTa, sp. nov. 



21899— N^o, 45 27 



