AMERICAN COLEOPTERA. 9 



between bands one and two at the margin, and two others between bands two 

 and three. Presternum in front trisinuate, coarsely but not densely punctured. 

 Abdomen coarsely but not densely punctured, rather smoother at middle. 

 Last ventral without trace of double margin or carina at tip. Body beneath 

 coppery bronze sparsely clothed with whitish hair. Length .30 — .44 inch; 

 7.5 — 11 mm. 



This species is more slender than any other of the normal forms 

 and viewed laterally the upper surface more arcuate and the head 

 and thorax more deflexed than any species excepting alacris and 

 comata. 



Three specimens from Texas. For the two in my cabinet I am 

 indebted to Mr. A. S. Fuller of Ridgewood, N. J. 



A. robusta, n. sp. — (PI. I, fig. 6.) Form robust, moderately depressed, 

 color black with slightly bluish tinge, moderately shining, thorax yellow at 

 the sides, elytra with three transverse bands interrupted at middle and an 

 apical spot reddish yellow, surface with inconspicuous greyish hairs. Head 

 coarsely not densely punctured, a smooth frontal line and feeble vertical carina. 

 Thorax. rather wider than twice the length, apex emarginate base truncate and 

 very distinctly wider than the elytra, sides nearly straight, rapidly wider pos- 

 teriorly, hind angles obtuse, margin very narrow, scarcely visible from above 

 except at base, disc with shallow triangular median impression and an oblique 

 impression on each side terminating in a fovea at base, surface sparsely punc- 

 tured, more densely in the lateral impressions. Elytra twice as long as wide 

 at base, sides nearly parallel at basal two-thirds, then narrowing to tip and 

 moderately serrate, umbone not prominent, disc feebly striate at middle, more 

 distinctly at sides and apex striae with coarse but not serrate punctures, inter- 

 vals with a single series of finer punctures, color nearly black with reddish- 

 yellow transverse bands, the first extending from the margin slightly obliquely 

 toward the suture, the second and third transverse, also an apical spot. Body 

 beneath with slight bluish tinge, sparsely clothed with rather long greyish 

 hair. Prosternum at middle and sides coarsely punctured, anterior liiargin 

 trisinuate. Abdomen sparsely and rather finely punctured, last ventral with a 

 very feeble trace of sub-marginal carina. Length .40 — -.44 inch; 10 — 11 mm. 



Two specimens collected in Owen's Valley, California. 



A. pubiveutris, n. sp. — (PI. I, fig. 7.) Form moderately robust, sub- 

 depressed, sparsely clothed with short, greyish hair, color black, shining, with a 

 very feeble tinge of blue. Head coarsely and densely punctured, front slightly 

 impressed, vertex with fine carina. Thorax nearly twice as wide as long, apex 

 feebly bisinuate, slightly prolonged at middle over the head, base truncate, 

 not wider than the elytra, sides moderately arcuate in front, widest at middle, 

 slightly narrower at base, lateral margin very feeble not visible from above, 

 becoming inferior at base; disc convex, median line well marked, a broad 

 shallow impression at middle of base and a fovea on each side, surface coarsely 

 and moderately densely punctured, at sides more finely and more densely 

 punctured. Elytra as wide at base as thorax, umbone feeble, sides nearly 

 straight at basal two-thirds and feebly convergent, apical third arcuately nar- 

 rowed, margin finely serrate, disc subdepressed, striate, strise with coarse punc- 



TRANS. AMER. ENT. SOC. VII. (2) JANUARY, 1878. 



