100 Coleopterological Notices, III. 



its larg-e size, unusually short, dense pubescence and excessively 

 dense punctuation, not only of the pronotum, but also the elytra ; 

 on the latter the serial punctures are not distinct, being obscured 

 by the crowded punctuation of the intervals. 



The fourth joint of the maxillary palpi is normal, moderate in 

 size, recti-triangular, the apex being' subequal in length to the outer 

 side. 



This can hardly be the female of grandicoUis, as the dense punc- 

 tuation along' the middle of the abdomen is always a male char- 

 acteristic when it occurs in the allied Tenebrionidse. 



17 H. exigUllS n. sp. — Oblong-oval, subparallel, rather convex, dark 

 brownish-castaneous ; under surface, legs and antennae paler, more rufous ; 

 integuments above rather dull, the pubescence short, very dense, conspicuous. 

 Head small, less than one-half as wide as the prothorax ; clypeus and inter- 

 ocular surface finely but not densely punctate, polished ; eyes large, separated 

 by rather less than one-half their width ; antennae somewhat slender, about 

 two-fifths as long as the body, joints five to ten moderately obconical, fully 

 one-half longer than wide, three and four subequal, nearly cylindrical. 

 Prothorax nearly three-fourths wider than long, the apex rather broadly but 

 strongly arcuate, and almost perfectly continuous with the sides, the latter 

 very broadly rounded anteriorly, becoming parallel and nearly straight only in 

 basal third ; basal angles scarcely more than right, not noticeably rounded ; 

 base transverse, the sinuations narrow but rather strong ; disk evenly convex, 

 not impressed, rather finely, extremely densely punctate, the punctures rather 

 shallow, arcuate anteriorly, rapidly shallow and evanescent at their posterior 

 extremities, in mutual contact in a transverse direction, which gives to the 

 punctuation a vague appearance of transverse rugulation under low power. 

 Elytra a little more than three times as long as the prothorax, and, throughout 

 basal two-thirds, equal in width to the latter, gradually ogival at apex ; sides 

 parallel and barely perceptibly arcuate ; disk finely, very densely punctate, 

 with fine, extre'mely feebly impressed striae which are just perceptibly punc- 

 tate. Under surface shining, the abdomen finely, sparsely punctate. Legs 

 moderate, the basal joint of the hind tarsi equal in length to the remainder. 

 Length 4.0 mm. ; width 1.7 mm. 



Texas (El Paso). Mr. Dunn. 



A small and inconspicuous species, which is however not closely 

 related to any other here described. It may be known at once by 

 its exceptionally small size and large eyes. 



In the unique type the prosternum has been broken awa}^ at the 

 sides, exposing the intercoxal process. This, viewed vertically upon 

 its exposed surface, is well known to be longitudinally convex, 

 strongly inflexed behind, arriving at the level of the prosternal side- 



