396 Coleopterological Notices. 



tant and strongly pronounced rows, with a very few fine punctures 

 scattered along the intervals, — a radically different arrangement 

 which is reproduced in arcuatus. Debilis and arcuatus while 

 allied to carbonarius are easily distinguishable from it and from 

 each other ; they are, in fact, specificalty valid in every sense and 

 should be restored to the list. 



3 The species longicollis and giganteus when normal have the 

 elytra smooth, polished and very minutely, sparsely punctate, the 

 punctures being distributed without order, but occasionally the elytra 

 have closely approximate series of large very shallow dents, which 

 are not true punctures, for on close examination the true punctures 

 are still seen to be distributed irregularly over the surface, some- 

 times accidentally coinciding with the shallow fovese, but generally 

 not. This is a remarkable character, probably affecting also the 

 allied estriatus described below, although in the specimens at hand 

 there is no indication of it. 



E. porcatlis n. sp.— Body somewhat slender in the male, robust in the 

 female, shining, the pronotum very feebly alutaceous, black throughout, 

 moderately convex above, strongly so at the sides. Head moderate, somewhat 

 densely punctate, very coarsely so on the epistoma ; antennae long and rather 

 robust, the third joint about four times as long as wide and fully as long as 

 the next two together, fourth nearly twice as long as wide. Prothorax about 

 one-fourth wider than long, the apex just visibly narrower than the base, very 

 feebly emarginate in circular arc, the angles slightly obtuse, very narrowly 

 rounded ; base feebly, evenly arcuate ; sides more strongly arcuate before the 

 middle, thence moderately convergent and gradually feebly sinuate to the 

 basal angles, which are very obtuse but not distinctly rounded ; disk evenly 

 convex, finely, sparsely punctate, the punctures becoming rather coarse later- 

 ally but not very dense. Elytra about two and three-fourths times longer than 

 the prothorax and, in the middle, very slightly wider in the male and nearly 

 three-fourths wider in the female ; base broadly, feebly emarginate, as wide 

 as the contiguous base of the prothorax in the male but distinctly wider in 

 the female, the apex very strongly declivous, not at all produced, narrowly 

 rounded — viewed posteriorly — disk very deeply sulcate, the sulci finely, rather 

 sparsely and muricately punctate, the intervals equal in width to the sulci, 

 very convex, finely, sparsely punctate. Spurs of anterior tibiae slender and 

 pointed, unequal but more strongly so in the male. Length 18.0-19.0 mm. ; 

 width G.0-S.8 mm. 



Arizona (Fort Apache). 



The three specimens before me indicate a species belonging near 

 obsoletus, but not very closely allied to it. The size is very much 

 larger, the elytra more deeply sulcate, the sulci finely punctate and 



