6 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 79 



tarsal segments longer than two to four, these subequal ; hind femora 

 moderately thickened, two strong apical spurs on tibia, outer member 

 about half the length of the inner, proportionate size of tarsal joints 

 as on midlegs ; outer face of hind coxae with a narrow band of silvery 

 hairs lengthwise, and hind edges of hind tibiae bordered with two 

 poorly defined rows of long stiff hairs; nietanotum very short, 

 transversely cui"ved, its anterior and posterior margins parallel; 

 propodeum about two-thirds wider at front than long, sides rounded 

 and converging broadly posteriorly, median groove moderately de- 

 veloped, usually broad and shallow with bottom rounded, its mar- 

 ginal carinae not always present or complete, groove limited in front 

 by a curved or angulate carina, surface of the segment in part reticu- 

 lated coarsely to finely, or rugae sometimes lacking just laterad 

 of the groove; spiracles ovate or oval, near cephalo-lateral corners; 

 front wings reaching shortly beyond end of abdomen, hind wings 

 extending halfway between stigma and apex of front wings, latter 

 broadest beyond stigma and twice the width of the hind wings, front 

 margins almost straight, hind margins uniformly oblique, hamular 

 fold on narrow slender thickening on hind margin of basal half; 

 apical two-thirds of front wings mostly densely and minutely hairy 

 and bordered with similar hairs, basal third with a pattern of setae 

 in rows on obscure ridges, submarginal vein slightly thickened 

 proximad of stigma and bearing from 10 to 18 long setae in a single 

 row, stigma situated a short distance behind middle, marginal and 

 stigmal veins shorter than stigma, marginal vein with seven or eight 

 setae, stigmal vein knobbed with a short cephalo-distal tooth, hind 

 wings without large hairs on base, apical two-thirds with vestiture 

 like front wings, three hamuli on front margin short of middle, basal 

 hamulus straight, others recurved. 



Petiole about twice as wide as long, rounded and sculptured above, 

 abdomen strongly compressed, rounded above and broadest at upper 

 third, segments converging below, first and second combined shorter 

 than third above, fourth broadly emarginate behind and shorter than 

 third but lateral faces longer and their dorso-ventral margins con- 

 verging moderately ventrad, those of the third narrowing wedge- 

 like, fifth and sixth segments small, in some specimens telescoped, 

 hidden, spiracles of sixth more or less visible on sides, tips of ovi- 

 positor sheaths protruding fairly above oblique posterior face; sur- 

 face of abdomen smooth, highly polished to very finely coriaceous or 

 granulose, usuallj'^ bare except segments five and six and sheaths 

 which are hairy, the first sparsely, the latter two more hairy. 



Male. — Length, vestiture, and sculpturing much as in female; 

 color generally somewhat darker and form more slender, head and 

 thorax slightly broader in proportion to the pronotum than in 

 female; funicle 4-jointed. the first joint longer, F2 to F4 mostly 



