OF WASHINGTON. 79 



bounded at base by two apical claws, simple, sinuate, reflexed) ; 

 wings as in Xenos 8 



8. Palpi with basal joint short, robust, second elongate, subcylindrical, 



deflexed; oedeagus longitudinally ridged, 



Pseudoxenos Saunders, 1872. 

 Type of genus, Pseudoxenos schaumii Saunders, 1872, parasitic 



on Ancistrocerus parietum L., Corcyra. 

 Described species : 



klugii Saunders, 1852, parasitic on Hoplomertis Iccz'ipes 



Shuck., Epirus. 

 corcyricus Saunders, 1872, parasitic on Hoplomerus spinipes 



L., Corcyra. 

 heydenii Saunders, 1852, parasitic on Odyncnts dcUcndiis 

 Saund., Epirus, Corcyra. 

 Palpi with basal joint crassate, arcuate, second cylindrical, deflexed, 



Paraxcnos Saunders, 1872. 

 Type of genus, Paraxcnos erberi Saunders, 1872, parasitic on 

 Bembecinus peregrinus Sm., Corcyra. 



9. QEdeagus not arising between reflexed claws, short in proportion 



to the size of the ninth segment, not dilated near base, 

 abruptly acute at apex; elytra longitudinally ridged, 



Apractelytra, n. gen. 

 Type of genus, Apractelytra schzvarai, n. sp., Washington, D. C. 



10. First distal vein double Eupathocera, n. gen. 



Type of genus, Eupathocera lugubris, n. sp., parasitic on Sphex 



(Ammophila) extremitatus Cress ; Cincinnati, Ohio. 

 Described species : 



sphecidarum Dufour, 1837, parasitic on Sphex {Ammophila) 



sabulosa L., France, Germany. 

 ? sieboldii Saunders, 1872, parasitic on Misciis campestris 

 Latr., Germany. 



11. Two distal unattached veins between third and fourth primaries, 



one between fourth and fifth Ophthalmochhis, n. gen. 



Type of genus, Ophthalmochlus duryi, n. sp., parasitic on 



Priononyx atrafa Lep., Cincinnati, Ohio. 



One distal unattached vein between third and fourth primaries, 



one between fourth and fifth; cedeagus considerably dilated 



at base, arising between two claws. .. .Acroschismus, n. gen. 



Type of genus, Acroschismus hubbardi, n. sp., parasitic on 



Polistes crinitus (americanus) Felt, Florida. 

 Described species : 



X. nigrescens Brues, 1903, parasitic on Polistes rubiginosus 



Lep., Texas. 

 X. pallidus Brue ., 1903, parasitic on Polistes annularis 

 L., Texas. 



