46 GEO. H. HORN. 31. D. 



Atlantic region proper, while the two brown species extend — the one 

 from Florida to Texas, the other from Texas to Cape San Lucas. 



Mesosternal fossa with parallel sides. 



Elytra sub-striate atteiiiiaf ns. 



Mesosternal fossa with sides strongly convergent behind. 

 Species totally black. 



Elytra with punctures arranged in distinct striae; side margin of thorax en- 

 tirely visible from above lieContei. 



Elytra with rather dense confused punctuation. 

 Thorax opaque, densely punctured. 



Thoracic margin entirely visible from above; elytra without trace of 



striae; punctuation of thorax coarse; form elongate ater. 



Thoracic margin deflexed in front; elytra sub-striate; punctuation of 



thorax finer and denser; form robust I>iiijj;uis. 



Thorax shining, punctuation not dense. 



Thoracic margin deflexed in front : eh'tra sub-striate ; form moderately 



robust abrupttis. 



Species brown or ferruginous with punctato-striate elytra. 



Thorax as wide or wider than long; pubescence recumbent. ..texaiiUS* 

 Thorax longer than wide; pubescence semi-erect hepatictis. 



li. attennatns Say. — Form moderately robust, gradually narrower poste- 

 riorly, feebly shining, reddish brown, elytra darker toward the apex, sometimes 

 totally black, clothed with very fine sericeous pubescence. Antennse piceous, ser- 

 rate, attaining the hind angles of thorax in male, shorter in female. Head piceous, 

 convex, moderately coarsely, not closely punctate. Thorax as long as wide or 

 longer in the male, sides gradually narrowing from base to apex, feeblj' arcuate, 

 lateral margin invisible from above in front, hind angles produced, stronglj' cari- 

 nate, disc convex, a median depression posteriorly, coarsely not densely punctate. 

 Elytra not wider than the thorax, rapidly narrowing to apex, and dehiscent for a 

 short distance, the tips acute, surface sub-striate, densely sub-muricate punctate. 

 Flanks of prothorax densely punctate, prosternum more shining and more sparsely 

 punctate. Abdomen not densely punctate. Length .72-. 88 inch; 18-22 mm. 



In well preserved specimens the body beneath and thorax above are 

 distinctly iridescent. The sides of the mesosternal cavity are moderately 

 elevated and parallel, in this respect this species differs from all the others 

 in our fauna. 



Widely distributed over the territory from the Rocky Mountains to 

 the Atlantic and as far South as Texas. 



li. liCContei Horn. — Form elongate, black, moderately shining, very sparsely 

 clothed with short black pubescence. Antennee serrate, slightly passing the hind 

 angles of the thorax in female, one-third longer in male. Head feebly convex, 

 coarsely not closely punctate. Thorax longer than wide in both sexes, sides 

 slightly arcuate in front, straight and divergent posteriorly, hind angles prolonged, 

 carinate, lateral margin entirely visible from above, disc moderately convex, a dis- 

 tinct depression at middle posteriorly, coarsely not densely punctate. Elytra a 

 little wider than the thorax, a little more than three times as long, sides scarcely 



