TENEBRIONID.E 103 



very bluntly rounded, the base broadly bisinuate, with the angles 

 right, not at all rounded; sides subevenly and strongly rounded 

 throughout the length; surface moderately coarsely, unusually 

 deeply, densely and sublongitudinally confluento-punctate, with a 

 few irregular punctureless areas, broadly concave, gradually and 

 moderately reflexed and closely, coarsely, transversely rugose later- 

 ally; elytra ovoidal, fully two-fifths longer than wide, widest at the 

 middle, with the sides very strongly arcuate; at the humeri much 

 narrower than the thoracic base; discal costse broad at base, the 

 second finely acute along the crest and strongly elevated, the first 

 very low and finely sinuous, uniting with the marginal ridge un- 

 usually near the apex, the second ending abruptly near the summit 

 of the declivity; surface throughout very coarsely, strongly and 

 confusedly rugose, impunctate and without evident hairs; under 

 surface rufescent, alutaceous, the abdomen rather finely but strongly, 

 not densely punctate. Length (cf) 16.7 mm.; width 8.7 mm. 

 Texas heres n. sp. 



10 Form elongate-suboval, strongly convex, black, somewhat shining 

 throughout; head dull, rather finely, sparsely punctate, coarsely 

 and more closely so at base, the hairs dark and indistinct; prothorax 

 relatively very small, three-fifths wider than long, less than three- 

 fifths as wide as the elytra, coarsely, very deeply and unevenly but 

 rather loosely punctate and strongly convex medially, the punctures 

 densely confluent laterally, the sides subevenly rounded throughout, 

 but little converging basally, more so apically and rather narrowly, 

 deeply concave, reflexed and transversely coarsely rugose, the edge 

 rather thick and strongly serrulate; hind angles small, not much 

 produced, not blunt, the base sinuato-truncate medially, broadly 

 sinuate laterally; elytra relatively large, much elongated, nearly 

 three-fifths longer than wide and four times as long as the prothorax, 

 widest at the middle, the sides broadly arcuate, the humeri obtusely 

 rounded, not very evident, the discal costse moderately elevated, 

 equal, confluent at the basal margin and also more than midway 

 down the posterior convex declivity, the surface moderately and 

 not very closely, subtransversely rugose and with the granules 

 distinct and rather close-set, the hairs not distinct; abdomen shin- 

 ing, the moderate asperulate punctures narrowly dense along the 

 median line, sparse laterally, the last segment normal. Length 

 (9) 19.0 mm.; width 10.0 mm. Wyoming (Wind River). 



crenicollis n. sp. 



ii Body oblong, moderately stout, deep black and rather shining 

 throughout; head broadly but evidently impressed, the punctures 

 rather sparse but evident throughout, the minute hairs not very 

 distinct; tenth antennal joint not very abruptly wider than the 

 ninth; prothorax large, five-sixths or more as wide as the elytra, 

 three-fifths wider than long, the deeply sinuate apex much narrower 

 than the base, the angles blunt; sides evenly and rather strongly 

 rounded, becoming straight or barely subsinuate near the basal 

 angles, which are moderately produced and acute; surface convex, 

 sparsely, unevenly and rather finely punctate, becoming broadly 



