196 GEO. II. nORN, M. D. 



Elytra with intervals very nearly equal, the second and fourth more densely 

 punctured and hairy. Body beneath moderately hairy. Pygidium punctured 

 and alutaceous, moderately hairy, with narrow lateral white space. 



The male has a slender, straight anterior tibial spur. The pygidium of the 

 female is distinctly sinuate on each side near the tip, and the tip truncate. 

 There are no oblique transverse bands on the elytra and no trace of them, and 

 no lateral velvety space. 



This species is especially abundant in Virginia, rarely occurring north 

 of there, although extending its habitat toward the Gulf States. 



T. viridiiliis, Fab. — Entire surface brilliant metallic green. Head sparsely 

 and finely, thorax more coarsely punctured, sparsely clothed with short erect' 

 hair. Elytra with intervals equal and nearly equally punctate. Pygidium 

 coarsely alutaceous. Body beneath sparsely pilose. 



This species more nearly resembles affinis in form. The elytra with, 

 at most, mere traces of the transverse bands but no lateral velvety 

 space. The pygidium of the female is very decidedly sinuate on each 

 side near the tip, and the tip truncate. Both sexes have anterior 

 tibial spurs, that of the male more slender and straighter than 

 the female. 



The color is apt to vary somewhat, the green becoming dark blue, in 

 which case the elytral bands are somewhat more evident. 



Occurs in the Gulf States. 



T. {Trigonopeltastes) delta, Fab. — Clypeus sparsely punctate and hairy, 

 hairs recumbent; front velvety black, a transverse band of yellow scales be- 

 tween the eyes. Thorax velvety black, entire margin and reversed delta 

 yellow, covered with scales and with very short hairs. Elytra with rows of 

 indistinct punctures, intervals equal, color orange or paler with black markings 

 arranged as follows; an oblique band extending from the humeri toward the 

 middle of the suture and prolonged parallel with the latter, a triangular 

 space exterior to this; also a subscutellar short yellow line, Scutellum yellow, 

 divided. Pygidium densely clothed with yellow scales, sparsely pubescent, 

 tip and median line usually abraded. Body beneath densely clothed with 

 yellow scales and sparsely hairy. Legs rufous with very few scales, hind tibiae 

 and tarsi darker. 



The elytral mai'kings are subject to extreme variation, that above 

 described being the typical form The sexual characters have already 

 been noticed. 



Occurs from Delaware to Texas. 



ONORIMUS, Lep. 



In this genus the sexual distinctions are also well marked. In the 



male the pygidium does not differ essentially in form from that of the 



female, there is however on each side a vague longitudinal impression. 



The middle tibin? of the female are straight, those of the male are 



