NO. 2293. PARASITIC CHALCIDOID FLIES— TIMBERLAKE. 177 



broad at apex, with three short, equal or nearly equal teeth, of which 

 the lower two are acute, and the upper or inner one is much rounded 

 at apex. Palpi short, the maxillary pair four-jointed, with the basal 

 joint very short, the second about twice as long, the third and fourth 

 increasing still more in length, the fourth being about twice as long 

 as the second and slenderer; labial pair three-jointed, with the mid- 

 dle joint as long as thick, the other two subequal and a little longer. 



Thorax rather more robust than in Homaloiyliis, but not differing 

 much in structure except that the axillae meet broadly at their tips 

 and are not infrequently slightly elevated above the surface of the 

 scutellum; the latter more to much more convex and slopes down- 

 ward more toward the sides and especially toward the apex, the mar- 

 gin, however, from base to apex generally well elevated and abruptly 

 declivous; propodeum the same except that it is declivous or slopes 

 downward from in front toward the abdomen, instead of being flat 

 as in Homalotylus; mesepimeron visible as a very narrow sclerite 

 along the posterior margin of the mesopleura. Legs about the same, 

 except that the middle tibial spur is rather shorter, or about three- 

 fourths as long as the first tarsal joint. Wings of the same com- 

 parative length but averaging a little wider than in IlGmalotylus; 

 marginal vein always punctiform, the stigm.al sometimes originating 

 just before the submarginal vein reaches the costal margin, moder- 

 ately long, straight and forming a right angle with the postmarginal as 

 in iceryae or somewhat less than a right angle as in most of the species, 

 postmarginal short and spur-like as in iceryae or nearly one-half as 

 long as the stigmal as in vinulus and pundiceps; the disk ciliated 

 about as in Homalotylus except that the subapical spot of transparent 

 cilia is absent, the speculum indistinct except in axillaria, pmicticeps, 

 and atriventris, and the basal third of disk is usually bare or nearly 

 so instead of being covered with transparent cilia; hind wings a little 

 wider, the costal cell being wider and not so attenuated near the 

 booklets. 



Abdomen narrower than in Homalotylus, about two-thirds as long 

 as the thorax in most species or a little more and always longer than 

 wide, with the base broad, the sides parallel or subparallel and the 

 apex nearly truncate, or the base narrower and the sides more or less 

 convex as in vinulus, punciiceps, and airiveniris; first tergite reach- 

 ing about one-third to nearly one-half of the distance from base to 

 apex, the seventh tergite ranking next in length; tactile plates situ- 

 ated a httle nearer to the middle than to the apex of abdomen, the 

 vibrissae considerably longer and more conspicuous than in Homa- 

 lotylus and reaching to the apex: structure of venter hardly differ- 

 ing from Homalotylus, the ovipositor enclosed by the fifth ventrite 

 and not distinctly protruded in the known species. 



11.5690— 19— Proc.N.M.vol.56 12 



