INSECUTOR INSCITI^ MENSTRUUS 131 



Acantholeria oediemus, new species. 



Male and female. Foremost fronto-orbital from nothing to 

 about a third of the hind one, in the female averaging larger, 

 very rarely nearly a half. No prosternal bristle; large hu- 

 meral and (four) dorso-centrals. 



Length, 5 to 7 mm., taken in copula. 



Head pale brown, antennae to vertex red-yellow, antennae 

 red-yellow ; arista medium long, black and very short micro- 

 scopically pubescent. Vibrissae one long strong, below a single 

 row of hairs to lower edge. 



Thorax, dorsum pale olive brown, rarely a thin median 

 red-brown stripe ; dorso-centrals rising from spots of the same 

 color ; dorsum irregularly sparingly hairy. 



Pleura color as dorsum, but occasionally with a grayish 

 peppering; propleura one bristle, mesopleura bare, except two 

 to four hairs below the disk. Pteropleura bare, sternopleura 

 one strong bristle and six or seven hairs near the top edge, 

 three or four in the middle, and many bristles between the 

 coxae. 



Abdomen gray-black, the end segments sometimes with red- 

 dish yellow, all sparingly hairy ; male hypopygium red-yellow 

 (construction distinct from cineraria and ahnormalis). 



Legs red-yellow in male, the hind femora on the under and 

 inner side with a cluster of 7 to 12 thick strong longish spines 

 with hooked tips, all rising close together but spreading out in 

 fan-shape ; from the roots of these to the base perfectly bare 

 and smoothly polished. On the under but outer side, a straight 

 row of smaller spines, from the base; opposite the roots of the 

 cluster a sudden drop to hairs, medium long but thin to the 

 apex. Hind tibia on the under side with an even swell to a 

 bump near the middle. 



Described from 341 specimens, 107 male, 133 female. All 

 from Cranbrook and Michel, British Columbia, April to 

 August. 



Acantholeria ahnormalis, new species. 



Male. Similar to oediemus except interior construction of 

 hypopygium and armament of the hind legs, which on the 



