NORTONIA. 141 



rounded ; its cheeks, not dilated, separated by a cavity without 

 distinct margin; on each side of nietathorax, the lateral edge is 

 quite distinct. Head narrower than thorax. Abdomen strongly 

 retracted at the base of the second segment; the first subpedicu- 

 late at the base, and suddenly enlarged, parted by a feebly exca- 

 vated line near its border; second segment and often the third 

 having their border feebly upturned. Head and thorax shining, 

 wholly cribrose and throughout bristling with a thick tomentose, 

 orange, or ferruginous pile. The punctures are a little separated 

 and the nietathorax hardly rugose, but shining and punctured, 

 like the rest of the thorax. Abdomen velvety, satin-like. 



Insect ferruginous; some varying black colors in the sutures 

 of the thorax and on the vertex. Antennas black above, beyond 

 the fourth article. Mesothorax often black with two ferruginous 

 lines, either arcuate or terminating with a hook. Base of the 

 abdominal segments often blackish and their border often yellow. 

 Legs ferruginous with the tarsi yellowish. Wings ferruginous, 

 washed with gray, with their terminal border margined with 

 brown, and brilliant with beautiful golden reflections. Wings 

 ferruginous or grayish, with purple reflections. 



% . Smaller ; offering nothing very striking'in form, the thorax 

 not being inordinately wide as in the 9; puncturation a little 

 stronger. Face offering a little vertical carina, which extends to 

 a little frontal tubercle on the clypeus ; nietathorax more rugose, 

 garnished with a pile of gray hair; body a little .less hirsute, 

 thorax shorter; abdomen more slender; the first segment more 

 lengthened, almost pyriform ; more strongly punctured. 



Clypeus yellow, polygonal ; its inferior border with two little 

 separated teeth. Hook of the antennas ferruginous ; orbits often 

 bordered with yellow, scape of the antenna? often yellow beneath. 

 Face, vertex, mesothorax, and middle of nietathorax often black; 

 border of the second and third segments strongly upturned ; all 

 the abdominal segments bordered with yellow. Whigs subhya- 

 line or amber colored or smoky, with violet reflections. 



Var. 9£. — a. The thorax underneath black; abdomen either 

 ferruginous or having the segments bordered with yellow. 



b. Black ; mandibles, lip, a spot beneath the antennas, and a 

 line behind the eye, yellow ; prothorax ferruginous, with a yellow 

 mark in the middle ; two dots on the-scutel and post-scutel yel- 

 low; nietathorax ferruginous on both side, with its inferior edges 



