TENEBRIONID.E IIQ 



elytra, the deep apical sinus much narrower than the base, the latter 

 transverse, feebly arcuate at the sides, very broadly and feebly 

 sinuate medially; surface broadly, very feebly convex, extremely 

 minutely and remotely punctulate, becoming broadly, rather 

 rapidly and strongly reflexed, flattened and coarsely rugose in 

 transverse sinuous folds laterally, with a.few coarse, sparse punctures 

 in the concavity at the origin of the reflexure, the side margins feebly 

 crenulate and thin, acutely and prominently angulate at the middle, 

 thence converging and broadly arcuate to the everted and acutely 

 prominent apical angles and rather less converging, broadly and 

 evenly sinuate throughout to the very obtuse but not rounded basal 

 angles; scutellum equilatero-triangular, tumid, shining; elytra 

 widest very slightly behind the middle, twice as long as wide, 

 gradually acute in apical two-fifths, very gradually and moderately 

 declivous behind, the sides moderately converging and arcuate to 

 the truncate base, which is acutely dentate laterally, but scarcely 

 as wide as the thoracic base, the surface very strongly, evenly con- 

 vex, with close-set, broadly and feebly impressed, very unevenly 

 rugulose, subequal lines throughout the width, the intervals but 

 feebly convex, confusedly rugulose though shining and subim- 

 punctate, the lateral margin very obtuse and obsolete, barely trace- 

 able; abdomen minutely, remotely punctulate; legs moderately 

 slender, very elongate, the hind tibiae very strongly bent. Length 

 (9 ) 30.0 mm.; width 12.8 mm. Arizona gravida n. sp. 



Elytra with the raised lines very distinct, convex, separated by wide 

 rugulose intervals 3 



3 Angulate sides of the prothorax narrow, deplanate but only just 

 visibly reflexed. Body narrower, black, the hind body dark rufo- 

 piceous throughout; head distinctly tri-impressed, the posterior 

 impression feeble, the punctures rather small and well separated; 

 prothorax barely three-fifths as wide as the elytra, about a third 

 wider than long, widest very evidently before the middle, where the 

 angle is rather blunt, the sides converging and arcuate to the small 

 and everted but rather blunt apical angles, moderately converging 

 and sinuate to the basal angles, which are obtuse; apex only moder- 

 ately sinuate and nearly as wide as the base, the latter as in gravida, 

 except a small feeble prominence opposite the scutellum; surface 

 with the small sparse punctures more evident, rather strong near 

 the apex, coarse laterally, the marginal region more narrowly rugose; 

 scutellum similar; elytra twice as long as wide to rather more, evenly 

 elongate-oval, widest near the middle, the basal margin laterally 

 dentate; surface not very shining, more or less strongly, evenly 

 convex, the fine even raised lines rendered very distinct by reason 

 of the unusually strongly, closely and evenly rugose, broad and 

 perfectly flat intervals; abdomen polished, very minutely, remotely 

 punctulate; legs similar, the hind tibiae strongly, more evenly arcuate 

 throughout their length. Length 25.0-26.0 mm.; width 10.5-10.9 

 mm. New Mexico (Santa Fe) .inferna n. sp. 



Angulate sides of the prothorax more acute, broader and distinctly re- 



