• !4 GEO. H. HORN, M. D. 



rufotestaceoiis. Head smooth, frontal impressions, moderately deep, straight 

 and parallel. Thorax one and three-fourths times as wide at base as long at 

 middle, slightly narrowed in front, apex very feebly emarginate, sides regularly 

 arcuate, base very slightly narrowed, hind angles rectangular, but not sharply 

 so, disc regularly convex, without trace of lateral depression, basal region with 

 two impressions each side, the outer larger and deeper, the entire basal region 

 usually punctate. Elytra distinctly wider at base than the thorax, sides arcuate, 

 disc moderately deeply striate, stria finely, but distinctly punctate, intervals flat, 

 slightly convex near the base. Body beneath darker in color than above, smooth 

 and shining, usually a few coarse punctures at the sides of the first two ventral 

 segments. Legs pale rufo-testaceou.s. Length .25 — .30 inch. ; 6.5 — 7.5 mm. 



The scutellar stria is long, moderately deep and usually free at the 

 posterior end. The ocellate punctures of the eighth stria are broadly 

 interrupted at middle, the stria itself usually more deeply impressed 

 at its extremities than usual in the genus. 



This species is very closely related to nupera, but is always brownish 

 in color and with pale legs. The form is narrower to the front, and 

 consequently more oval than in that species. Immature specimens 

 (»f nnpera are not so easily separated, but a careful regard to the form 

 will enable it to be done. The middle and posterior tibiae of the 

 male are nearly straight. 



Varieties occur in which the base of the thorax is scarcely punc- 

 tate. 



Putzeys suspected this species to be a variety of remotestriata, a 

 view which I followed until the true limits of variation became 

 known to me. 



Occurs in Lake Superior region, Colorado, Arizona and southern 

 C'alifornia. 



A, iinita:trix n. sp. — Form moderately elongate, piceous, the surface with 

 rather bright bronze lustre, resembling very closely aurata. legs always pale. 

 Antennae pale or brownish, rarely almost piceous. Head smooth, frontal im- 

 pressions short, deep, arcuate. Thorax less than twice as wide as long, widest a 

 little behind the middle, slightly narrowed in front, apex feebly emarginate, sides 

 regularly arcuate, hind angles rectangular, but slightly obtuse, disc regularly 

 convex, without trace of lateral depression, base on each side feebly bi-impressed, 

 the impressions punctate. Elytra distinctly wider at base than the base of the 

 thorax, sides arcuate, disc finely but sharply striate, strise finely, not closely 

 punctate, intervals flat. Body beneath piceous, with the tip of the abdomen 

 rufo-testaceous, sometimes entirely rufo-testaceous. Legs always pale. Length 

 .22 — .28 inch. ; 5.5 — 7 mm. 



The scutellar stria is always indistinct and broken in short lengths, 

 always free at both ends. The ocellate punctures are indistinct and 

 separated by a wide space at middle. The middle and hind tibia; 

 of the male are nearly straight. 



