864 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXII 



than in front, anteriorly and posteriorly truncate, without transverse 

 sulci; median carina persistent but low and dull. Prosternuui 

 unarmed. Legs short, the posterior femora (tig. 50) much swollen on 

 the basal three-foui'ths, less, or no more, than twice as long as the 

 pronotum, rarel}^ armed beneath and then with but one or two miiuite 

 spines; anterior tibite armed above on the outer side o\Ay with from 

 three to live spines. Wings as in Anahnis, except that those of the 

 male are apicalh^ more pointed. Abdomen plump, carinate dorsallj . 

 Cerci of the female simple, pointed, rapidly tapering; of the male 

 heav}', depressed at the tip and l)roadened, the inner angle forming a 

 short, sharp incurved spine (tig. 51); subgenital plate triangularly 



50 

 Pigs. 50, 51. — Pekanabrus scabricollis. 50, adult malk (after Snodgrass). 51, ceecus of 



MALE. 



incised in the male, the terminal styles about four times as long as 

 broad; subgenital plate of the female broadly incised; subgenital lobes 

 of the female elongate triangular, more than twice as long as the basal 

 breadth and tapering regularly to a point, often, in cabinet specimens, 

 lying very close to, or apically curved under, the edge of the subgen- 

 ital plate, the end of which it just reaches. Ovipositor moderately 

 curving upwards, considerably longer than the posterior femora and 

 apically pointed and unarmed. (Fig. 52). 



Color dark brown or dark reddish brown, in cabinet specimens often 

 discolored, being 3'ellowish brown; the lateral lobes of the pronotum 

 are margined below and behind with yellowish, and the elyta of the 



