8 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 68. 



antennae; malar space rather long, the malar furrow present; clypeus 

 transverse, distinctly separated, rounded to subtruncate apically; 

 frons concave, bounded laterally by a more or less distinctly ele- 

 vated ridge; temples flat or weakly convex and very sharply sloping; 

 occipital carina complete; antennae rather stout, subattenuate 

 basally; the apical joint nearly or quite as long as preceding two 

 combined, first joint of flagellum distinctly longer than the second, 

 scape subhemispherical, barely emarginate at apex; pronotum with a 

 sharp carina te tubercle on each side dorso-anteriorly; notauli obso- 

 lete or absent, prescutum long; scutcUum quadrate or trapezoidal 

 strongly carinate laterally; propodeum short, declivous behind, dorsal 

 and posterior faces separated either by a more or less distinct carina 

 or by difference in sculpture; metapleura not or indistinctly separated 

 from propodeum; wings large; areolet absent, intercubitus nearly 

 or quite twice as long as second abscissa of cubitus, basal vein 

 straight or nearly, nervulus interstitial or nearly, nervellus strongly 

 inclivous; front tibiae more or less swollen in middle and constricted 

 at base and apex; claws strongly pectinate; abdomen stout ovate, 

 first four tergites in female, five in male, with median triangular 

 areas set off by oblique furrows and an apical transverse furrow, ter- 

 gites beyond first also with deep basal furrow, fifth in female and sixth 

 in male without the apical furrow; apical tergites in female retracted, 

 hypopygidium reaching to or beyond apex of abdomen, membra- 

 neous in basal middle, onpositor half or more as long as abdomen, 

 compressed lanceolate apically. 



The tribe is very homogeneous with very few generic characters. 

 What characters there are however, are apparently very constant 

 and have practically all been used in the following key to the genera. 



KEY TO GENERA. 



1. Propodeum sharply areolated, distinctly separated from metaplexira; Bcutellum 



quadrate, truncate at apex; nervellus distinctly broken, subdiscoidella distinct; 

 black with only clypeus and minute markings on head and scutellum yellow. 



Lycorina Holmgren. 



Propodeum with at most an obsolete apical carina and traces of the median carinae, 



not separated from metapleura; scutellum trapezoidal, rounded apically; 



nervellus curved or striaght, not broken, subdiscoidella obsolete or absent; 



body highly ornamented 2. 



2. Posterior face of propodeum perpendicular; apical carina obsolete; body black with 



yellow markings and thorax more or less reddish; wings immaculate. 



Chlorolycorina Cushman. 



Posterior face of propodeum oblique, apical carina absent, dorsal and posterior 



faces of propodeum separated by difference of sculpture; body mostly yellow 



with blackish markings, at least without red; front wings usually infumate 



at apex Toxophoroides Cresaon. 



