44 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



Antennae IS-jointed, tbe scape about one-third the length of the head, 

 carved, snbchivate, Shorter in the $ ; pedicel small, rounded. 



Maxillary palpi short, 4-joiuted; labial palpi 2-jointed. 



Mandibles in $ Edentate, the outer tooth acute. 



Thorax eh>ngate, tlie protliorax long, triangular, rounded in front; 

 mesonotum short without furro\ys; scntellum rounded behind, with a 

 transverse furrow at base; metathorax subquadrate, roundedly trun- 

 cate ill $ ; longer abruptly truncate posteriorly in 9 , with squared 

 sides. 



Front wings with only a siugie basal cell and a punctiforin marginal 

 vein; no stigmal vein, tlie costal cell open; 9 sometimes apterous. 



Abdomen subpetiolate, elongate, cylindrical, pointed at apex, the 

 second and third segments the largest, the apical margins of segments 

 3, 4, and o roundedly eraarginate in 9 , in $ straight. 



Legs rather short and stout, the femora swollen, tibiie not spinulose, 

 the claws simple. 



A genus closely allied to ^Scleroderma and the females apt to be mis- 

 taken for those of that genus; but tlie 4-J(»iiited maxillary palpi and the 

 simple, not spinous, tibia' sufticiently distinguish them. The male is 

 recognized at once by the single basal cell in the front wings. 



Forster characterized the genus from a siugie male, the female being 

 unknown to him. I have been enabled to perfect his diagnosis by the 

 rearing of both sextos from a cluster of cocoons found in an old stump 

 and from specimens of another species reared from the cosmopolitan 

 beetle ^ilramit^ .surhKtmeiisis. 



The species known to me in our fauna may l»e tabulated as follows: 



TABLE OF SPECIES. 



Wingless 9 2 



WiugPid (? and 9 • 

 Black. 



Wiugs dusky; legs hrownisli yellciw A. Ni'RiLirENNis, A-slini, 



Wings liyiilinc. 

 Legs nifo-piccous; sutures of ;il)d<)niinal segments rufous 



A. VIRGINIENSIS Sp. IIOV. 



Legs black or piceous blaek; tarsi honey yellnw; sutures of abdomen 



not rnfous A. taksalis sp. nov. 



2 Head and tliorax rufo-piceous; a1)donien longer tlian the licad and thorax 

 united, black, tlie ti]) rufous. 

 Antenna' and legs lirownish-yellow A. virginikxsis, sp. nov. 



Ateleopterus niibilipennis Asliin. 



Ent. Am., iii, p. 97 <? nee 9 ; Cress. Syn. Hym. \>.'S12. 



S . Length 3""". Black, shining; very faintly closely punctulate, 

 but with a few coarser scattered punctures over the surface and 

 sparsely covered with a black pubescence. Antenna? 13-joiiited, the 

 scape brownish y<'llow, tli<' Hagellnm fuscous; the scape is one-third 



