298 MEMOIRS OP THE CARNEGIE MUSEUM 



3. Frons not broad, nearly smooth, opaque or minutely shagreened, or with only a few minute punctures ; 

 stigmal aud postmargiual veins unequal, the latter only slightly developed, the marginal vein very 



short, nearly puuctiform ; front wings hyaline but Avith a discoidal cloud Prionomastix Mayr 



(type Encyrtus morio Dalman). 



Tribe III. Mirini. 

 In this tribe fall the vast majority of the genera of the subfamily Encyrtinss, dis- 

 tinguished from the others by the mandibles, which are somewhat differently 

 shaped, and tridentate at apex. The tribe was fully discussed in the Proceedings of 

 the U. S. National Museum for 1900. The table of the genei'a pubhshed below is 

 practically the same as published in that work, except that some slight changes 

 have been made to enable me to incorporate some interesting new genera unknown 

 at that time. 



TABLE OF GENEEA. 



1. Females 2 



Males 58 



2. Mandibles rather long, with acute teeth, the apical tooth usually the longest, rarely with the two 



apical teeth longer than the inner ; labrum conspicuous ; front very closely puut;tate, or finely coria- 

 ceous, the thimble-like punctures absent, or the punctures smaller or more sparsely scattered ; wings 

 not ornate, and usually with a very short, or a punctiform, marginal vein, the hiiid wings usually with 

 a long costal cell that extends to the booklets ; abdomen usually more or less compressed towards 

 apex, the ventral valve extending to the anus but not plowshare-shaped ; head as viewed from in 

 front usually somewhat longer than wide, often much longer than wide, or subtriangular, the scrobes 



forming a triangle 3 



Mandibles shorter, with the teeth smaller, less acute and equal or nearly ; labrum not conspicuous ; 

 frons frequently but not always with a series of large, thimble-like punctures ; wings variable, fre- 

 quently ornate or dusky, although often hyaline ; scrobes usually semicircular 13 



3. Mai'ginal vein punctiform, not or scarcely longer than thick (very rarely twice as long as thick), the 



postmarginal vein not at all or only slightly developed, very rarely as long as the stigmal vein ; stig- 

 mal vein is rather long, always more than twice the length of the marginal, or much longer; body 



metallic or lustrous 4 



Marginal vein not puuctiform, at least twice as long as thick, but usually much longer, the postmar- 

 ginal vein longer than the stigmal vein 12 



4. Head viewed from in front long, subtriangular, much longer than wide, the cheeks, or malar space, 



long 5 



Head viewed from in front not or scarcely longer than wide, the cheeks, or malar space, not especially 

 long 11 



5. Front wings with a mai-ginal fringe 6 



Front wings without a marginal fringe. 



Antennae very long and slender, the flagellar joints all very long, cylindical, the sixth being at 



least four times as long as thick, the preceding still longer Psilophrys Mayr 



(type Encyrtus longicornis Walk.). 



6. Pedicel fully three times or more longer than thick at apex 7 



Pedicel not three times as long as thick at apex 10 



