526 PROCEEDINGS OF THE NATIONAL MUSEUM vol. w 



Lief. 30, pp. 6-188, 1912). Persons interested in a complete record of 

 the literature should consult Hedicke (Hymenopterorum catalogus, 

 pars 9 (Evaniidae), 1939). Only the original descriptions are cited 

 below in the species bibliographies. The types of the specific names 

 proj^osed by Ashmead, Bradley, and Kieffer have been studied. The 

 rest have not been available. 



The locations of types and of specimens studied from institutional 

 collections are indicated in parentheses by the name of the city in 

 which each collection is located. 



KEY TO THE NEARCTIC GENERA OF EVANIIDAE 



1. Forewing with only 3 strong longitudinal veins (costal, subcostal, and medial) 



and only one closed cell (subcostal) ; second and third tergites covering all 

 or nearly all the gaster ; notaulus extending less than 0.6 length of meso- 



scutum, usually absent Hyptia 



Forewing with numerous veins enclosing eight cells ; second and third tergites 



enclosing basal 0.6± of gastor ; notaulus complete 2 



2. Submedian to subbasal constricting groove on hind coxa interrupted on ventro- 



lateral face of coxa ; base of middle coxa separated from base of hind coxa 

 by about 2.0 length of middle coxa ; metastemum large and rather evenly 

 convex ; hind coxa beneath with a curved longitudinal carina next to meta- 

 sternal fork: (not visible when coxa is turned outward) ; shoulders of 

 pronotum rounded, without a sharp transverse ridge ; mediellan vein strong 



for about 0.9 distance to wing margin Evania 



Submedian to subbasal constricting groove on hind coxa not interrupted on 

 ventrolateral face of coxa, completely encircling coxa ; base of middle coxa 

 separated from base of hind coxa by about 1.0 to 1.5 length of middle coxa ; 

 metasternum smaller; hind coxa beneath without a curved longitudinal 

 carina next to metasterual fork, but sometimes with a curved gi-oove in that 

 position ; shoulders of pronotum with a sharp transverse ridge ; mediellan 

 vein distinct for less than 0.8 distance to wing margin 3 



3. Hind coxa beneath with a curved longitudinal groove next to metasternal fork 



(not visible when coxa is turned outward ; this groove should not be confused 

 with transverse coxal constriction) ; lower part of frous with a lateral longi- 

 tudinal carina that curves around outside of antennal socket to approach or 

 reach midline on upper part of face; second intercubital vein (a very weak 

 vein) meeting radial cell near its distoventral angle; mediellan vein distinct 

 to beyond middle of wing (except in a few exotic species) ; forewing of 



Nearctic species 5.5 to 7.5 mm. long Prosevania 



Hind coxa beneath without a longitudinal groove next to metasternal fork; 

 lower part of frons without a lateral longitudinal carina ; second intercubital 

 vein (a very weak vein) meeting radial cell considerably basad of its disto- 

 ventral angle ; mediellan vein not distinct to middle of wing ; forewing of 

 Nearctic species 4.0 to 5.0 mm. long Evaniella 



Genus EVANIA Fabricius 



Evania Fabricius, Systema entomologiae, p. 345, 1775. Type : Ichneumon appendir 

 gaster Linnaeus. Designated by Curtis, 1829. 



As defined in the key, Evania is a much more restricted and compact 

 genus than as used by other authors. Most of the species that they 



