410 PEOCEEDINGS OF THE NATIONAL MUSEUM vol. 83 



punctures occupying more than one-third but less than one-half of 

 scape, sensoria rather fine to moderately coarse and dense; anterior 

 and intermediate tibiae sometimes entirely testaceous except for a 

 darker stripe on latter above. 



Type.— 11. S.N M. no. 18299. 



Redescribed from three females and six males, including type, 

 allotype, and male paratype. The material is in the United States 

 National Museum. 



Distribution. — "Canada"; Illinois; Nebraska (Sept.); Colorado. 



UNIDENTIFIED SPECIES 

 PERILAMPUS ALEXINUS Walker 



Perilampus alexinus Walker, List of the specimens of hymeiiopterous insects in 

 the collection of the British Museum, Chalcidites, pt. 1, p. 89, 1846. 



J?/?^-— Presumably in the British Museum, 



This appears in the British Museum list as an American species, 

 although no locality is given. Dalla Torre, in his catalog of the 

 Hymenoptera, lists it as a synonym of hyalinus Say, but it does not 

 seem to be this species, judged from the description. In fact, it does 

 not appear to belong to the hyalinus group of species. 



PERILAMPUS CYANEUS Brulle 



Perilampus cyaneus Brulle, Histoire naturelle des insectes, HymSnopteres, vol. 

 4, p. 573, 1846. 



TyjJe. — Presumably in the Museum d'Histoire Naturelle in Paris. 



"Hab. la Caroline." From the former Bosc Collection. 



It is possible that I have redescribed this species as new under the 

 name of carolinensis, since Brulle in his description states that the 

 "vertex" is very strongly punctured; on the other hand, it may well 

 be hyalinus Say or possibly even chrysopae Crawford, although the 

 color cjiaracters would seem to preclude chrysopae. 



PERILAMPUS ENTELLUS Walker 



Perilampus eniellus Walker, Ann. Mag. Nat. Hist., ser. 1, vol. 12, p. 103, 1843. 



Type. — Presumably in the British Museum. 



"Found by R. Forster, Esq., in Ohio." 



Dalla Torre calls this species a synonym of platygaster Say, but 

 it is clearly not that species, judged from the description. It may 

 be Say's hyalinus or my carolinensis. 



