286 GEO. H. HORN, M. T>. 



Male. — Anterior tarsi slightly dilated. Posterior legs moderately elongate, 

 the femora not very stout, subangulate or toothed at middle, the tibia slender, 

 arcuate at apical third and somewhat thickened at tip. 



Two specimens are before me both males which show some 

 diflferences, which may with more specimens prove to have specific 

 value. 



The first in the cabinet of Dr. Leconte and the type has the 

 eighth stria of punctures entire and without a short subhumeral row 

 of punctures. The posterior femur is merely subangulate at middle. 

 In the second in my cabinet the eighth stria is abbreviated at base 

 and there is a short subhumeral stria. The posterior femora are 

 acutely toothed at middle and the hind tibiae a little less thickened 

 at tip. The two agree in having the third joint of the antenna short 

 and nearly as thick as the second, while in all the other species the 

 third joint is usually slender and distinctly longer than the second, 

 often much so. 



Two specimens, Georgia. 



A. tiiimeralis n. sp. — Oblong-oval, moderately convex, piceous, shining, 

 basal margin near the humeri testaceous. Head sparsely punctate, vertex 

 with several much coarser punctures in a transverse series. Antennse nearly 

 as long as head and thorax, club darker. Thorax twice as wide as long, nar- 

 rowed in front, sides feebly arcuate, apex slightly emarginate, base arcuate, 

 hind angles rectangular but not prominent, surface sparsely punctate, less 

 distinctly at the sides. Elytra oblong oval, very little wider than the elytra, 

 humeri distinct, surface with eight rows of moderately deep and rather closely 

 placed punctures, the eighth row abbreviated at base and with a subhumeral 

 series of punctures, intervals irregularly bisinuately punctured, the alternate 

 intervals with coarse distant punctures. Metasternum alutaceous with very 

 few punctures, abdomen sparsely obsoletely punctate and alutaceous. Legs 

 piceo-testaceous. Length .16 inch; 4 mm. 



Male. — Anterior tarsi moderately, middle tarsi less dilated. Middle anri 

 posterior femora stout, the latter with the outer condyle obtusely triangularly 

 prolonged. Tibiae stout the posterior slightly arcuate. (PI. VII, fig. 4). 



Female. — Tarsi slender. Middle and posterior femora not as broad as the 

 male and without prolonged condyle on the posterior. Tibiae straight less 

 stout. 



I have seen but two specimens, the male in my cabinet, the 

 female with Mr. Ulke. The latter specimen is purely piceous in 

 color with the basal pale space as plainly visible as in my lighter 

 colored specimen. This character seems a good one for readily dis- 

 tinguishing this from any other in our fauna. By the male sexual 

 characters it is related to conferla and ohsoleta but with this the 

 resemblance ceases. 



Two specimens, northern California and Oregon. 



