280 GEO. H. HORN, M. D. 



4. It. oregoneiisis n. sp.— Oval, slightly obloiiir, fades robust, convex, 

 castaneous brown, surface with a very faint bronze lustre. Antennte with four 

 basal joints pale, outer joints fuscous. Head impunctate. Thorax very nearly 

 twice as wide as long, not narrowed in front, sides very feebly arcuate, slightly 

 obliquely truncate at front angles, base arcuate, marginal line not distinct, disc 

 moderately convex, sparsely and very finely punctate, almost smooth at sides 

 and apex. Elytra wider at base than tlie thorax, humeri broadly obliquely 

 rounded, umbone moderate, sutural angle obtuse, disc convex, the punctures 

 moderately coarse and close near base, finer and sparser at apex and sides. Body 

 beneath darker than above, nearly piceous. Abdomen sparsely punctate. An- 

 terior and middle legs yellowish testaceous, posterior femora castaneous. Length 

 .08— .10 inch. ; 2—2.5 mm. 



In the male the last ventral is faintly sinuate each side, the median 

 lobe has a small foveiform impression. 



This species is not conspicuously marked, except by the very trans- 

 verse thorax, the slight bronze surface lustre, and very dark under- 

 side. 



Occurs in Oregon. 



5. li. trartiictus n. sp. — Oval, slightly oblong, moderately robust, brown or 

 piceous, moderately shining. Antennae rufotestaceous, the outer five joints grad- 

 ually piceous. Head smooth. Thorax rather more than half wider than long, 

 not narrowed in front, sides arcuate, distinctly obliquely truncate at front angles, 

 base arcuate, the marginal line fine, Imt distinct, disc moderately convex, the 

 punctures fine and rather close near the base, very sparse and indistinct at front 

 and sides. Elytra wider than the thorax at base, humeri rounded, umbone mod- 

 erately prominent, sutural angle obtuse, disc convex, the punctures moderate in 

 size, not close, gradually finer and smoother at apex and sides, a vague indication 

 of a sutural stria is seen near the apex. Body beneath and posterior femora 

 similar in color to the upper surface. Abdomen rather coarsely and closely 

 punctate at middle. Legs pale rufotestaceous. Length .12 — .14 inch.; 3 — 3 5 

 mm. 



The male has the last ventral segment distinctly sinuate each side, 

 the middle lobe moderately prominent and with a short, but vague 

 longitudinal impression. 



This is the largest and most robust species at present known in 

 our ftiuna. 



Occurs in southwestern Virginia; collected by Prof. E. D. Cope 

 (see Trans. Am. Ent. Soc. 1868, p. 125). 



6. El. post rem us n. sp. — Elongate oval, rather depressed, piceous, moder- 

 ately shining, umbones paler. Autennje pale rufotestaceous, gradually infuscate 

 externally, joints 2-3-4 progressively longer. Head smooth. Thorax one-thii'd 

 wider than long. Apparently narrowed in front, sides feebly arcuate, slightly 

 subangulate at middle, the oblique truncation scarcely evident, disc feebly con- 

 vex, finely, sparsely punctate, basal marginal line fine, but distinct Elytra a 



