342 Coleopterological Notices. 



mate, submuricate punctures, the series sometimes very feebly impressed ; 

 intervals very finely, sparsely punctate throughout the width. Abdomen ex- 

 cessively minutely, feebly punctate ; metasternum a little more coarsely so, 

 nearly one-half longer than the first ventral segment. Legs long and slender, 

 the posterior tarsi distinctly shorter than the tibice. Length 6.6-7.2 mm. ; 

 width 2.7-3.2 mm. 



Arizona (Benson). Mr. Dunn. 



This species, which is represented by a good series, is allied only 

 to histricum, but is more slender and much more polished. A 

 portion of the series was communicated by Mr. Dunn as having 

 been taken at El Paso, Texas, but I am inclined to think that they 

 were all taken at the locality indicated. The sexual characters are 

 not distinctly pronounced. 



Ell. discors n. sp. — Oblong-elongate, parallel, moderately convex, rather 

 shining, castaneous throughout ; integuments thin ; wings well developed. 

 Head nearly as in longipenne, but less impressed and with the broad, indefi- 

 nite, transverse tumidity of the epistoma more acute and cariniform. Protho- 

 rax just visibly less than twice as wide as long, the apex much narrower than 

 the base, moderately emargiuate, the angles right, not rounded and slightly 

 prominent ; base truncate, feebly bisiuuate in the middle, the basal angles 

 very broadly obtuse but with the extreme apex right and slightly prominent, 

 the sides before them broadly and very feebly sinuate ; sides veiy strongly 

 arcuate and strongly convergent toward base and apex ; disk much wider at or 

 a little behind the middle than at base, very obsoletely impressed just before 

 the scutellum and with a feeble impressed median line ; punctures scabrous, 

 rather fine and decidedly sparse toward the middle, coarser, much denser but 

 still not very crowded laterally ; marginal bead moderate in elevation, very 

 thin, the outer edge very finely and feebly serrulate especially anterio)-ly. 

 Elytra but very slightly wider than the prothorax and between four and five 

 times as long, across the humeri about equal to it in width, and much wider 

 than its base, the humeri narrowly rounded ; apex broadly, obtusely rounded ; 

 sides parallel and subrectilinear ; disk with series of broad, very feeble, im- 

 ' pressed sulcations and equally wide intervals, very finely, not very densely, 

 subasperately punctate throughout, with vaguely defined series along the 

 middle of the sulci. Abdomen extremely minutely, the metasternum finely 

 but distinctly, rather sparsely, punctate, the latter between coxa and groove 

 scarcely one-half longer than the first ventral segment ; ventral segments long. 

 Length 6.7-7.8 mm. ; width 2.8-3.2 mm. 



Texas (El Paso). 



The peculiar feeble sulcation of the elytra is similar to that of 

 longipenne, but more pronounced ; on the other hand, however, 

 the series of punctures are much less definite than in that species. 

 Discors is related to longipenne, but differs in the much more 



