No. 2317. FIVE TRIBES OF WHNEUMONINAE—ROHWER. 431 



of all of the genera proposed by Foerster are not in the United States 

 National Museum collection but notes on those examined are given 

 to show the way these generic names would apply to the American 

 species: 



Gonophonus. — Genotype not available but it is evident that this 

 group is not represented in America by any described species. 



Moerophora. — Genotype not available but group probably rep- 

 resented in America by humeralis or stigmapterus. 



Sichelia. — ^Apparently not represented in America but no Euro- 

 pean specimens are available. 



Sterotrichus. — A single male of the genotype, determined by 

 Schmiedeloiecht, shows that this belongs close to group fngidus but 

 has the striate orbits of group maudae and would run there in the 

 key. It is probably the same group as Xorides (= Xyhnomus) in 

 the strict sense. 



Rhadinopimpla. — Genotype not available but a male determined 

 by Koman asR. brachylabris Kriechbaumer belongs to group insularis 

 and differs from the male of that group in the presence of a median 

 carina on the first tergite. 



Xorides { = Xylonomus). — Genotype of Xylonomus, as determined 

 by Roman, would fall more properly in group frigidus but has striate 

 orbits of group maudae. 



In grouping the American species the sculpture of the orbits and 

 vertex has been found to be very useful character and is used a num- 

 ber of times as the primary character because it is the same for both 

 sexes while the useful characters of the abdomen apply only to the 

 female. 



As far as known, all the species of this genus are parasitic on the 

 larvae of wood-inhabiting insects and mostly on Coleoptera of the 

 families Cerambycidae and Buprestidae. 



Generic characters. — Inner margin of eyes parallel or nearly;" malar 

 space long; malar furrow present; facial quadrangle variable ; antennae 

 long, slender and in the female sometimes banded with white; ner- 

 vulus an tif ureal, interstitial or postf ureal; nervellus perpendicular 

 or reclivous, broken near the middle; legs not swollen or twisted but 

 the tibiae are often constricted at the base; propodeum truncate 

 posteriorly, more or less completely areolated, the spiracle elongate, 

 well removed from base; abdomen longer than head and thorax, 

 subpetiolate to subsessile, depressed, the base of second tergite with 

 more or less distinct, depressed areas laterally; ovipositor cylindrical, 

 usually as long as or longer than the body. 



TABLE TO THE SPECIES. 



1. Posterior orbits with strong antroposterior striae; prescutum -wdth a median depres 



sion 2. 



Posterior orbits with oblique striae or smooth; prescutum without a median depres- 

 sion 6. 



