52 PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



the West Indies, belong here. The latter species, except in size, 

 agrees rather closely with the description of the genotype, which is 

 practically entirely of coloration. 



Temples convexly receding; frons very deeply concave, horn py- 

 ramidal with a carina on each side and one below running from base 

 to apex, the base broad; eyes slightly convergent; malar space sub- 

 equal to basal width of mandible ; clypeus elevated ; occipital carina 

 neither angulate nor interrupted below; upper tooth of mandible 

 longer than lower; antennae in female about three-fourths as long 

 as body, slender, slightly thickened beyond middle, not flattened 

 below, tapering at apex, in male slender throughout. Thorax robust, 

 much more than half as deep as long, compressed; humeral margins 

 of pronotum subangularly tuberculate in front ; notauli deep at least 

 anteriorly ; scutellum broader than long, strongly convex ; propodeum 

 with basal carina close to base and with more or less distinct traces 

 of apophyses, sloping precipitously behind basal carina, spiracles ^ 

 small oval; stigma very narrow; areolet very small, open behind; 

 discoidal cell pointed at base; nervulus antef ureal; nervellus inclivous, 

 broken near bottom or not broken ; legs very slender, the hind femur 

 slender subclavate, longer calcarium fully half as long as basitarsus. 

 Abdomen slender; first sternite extending far beyond spiracles, com- 

 pletely fused with tergite, postpetiole only slightly wider than petiole; 

 second tergite fully as long as first, these two together comprising 

 much more than half total length of abdomen; sheath not or barely 

 as long as first tergite; ovipositor slender, compressed, elongate 

 sagittate at apex. 



The genius is apparently wholly tropical in its range, the single 

 species occurring within the borders of the United States, being 

 known only from the extreme southern point of Texas. 



(MESOSTENUS) POLYCYRXroEA PUSILLUS (Cresson) (new combination) 

 (AGRYPON) POLYCYRTIDEA FLAVOPICTUS (Ashmead) (new combination) 



These two West Indian species are not known to occur on the 

 continent and are included here only to record the generic transfers. 



POLYCYRTIDEA LIMITIS, new species 

 Figs. Iff. Qi)i 



Female. — Length, 9 mm. 



Temples and vertex behind ocelli polished, frons medially rugu- 

 lose; face, malar space, and clypeus basally opaque coriaceous, the 

 face densely and clypeus sparsely punctuate; malar space fully as 

 long as basal width of mandible. Thorax coareely sculptured, pro- 



