Coleopterological Notices. 335 



quite homogeneous. Perforatum is almost similar in outline to 

 rufipes but differs in its smaller size, greater convexity, very much 

 coarser and more cribrate punctuation, more prominent thoracic 

 angles and shorter third antennal joint. The elytral series arc very 

 slightly impressed especially toward the suture, this feature being 

 feebly apparent also in several other species. 



Ell. (-marginatum Casey. — Cont. Descr. Col. N. A., I, p. 41 ; piceum, 

 papagonum and sculptile Cas. : 1. c, pp. 40-45. — Elongate, parallel, very convex 

 and subcylindrical, polished except near the apex, black, sometimes pale 

 ferruginous from immaturity ; legs and antennae dark rufous. Read relatively 

 large, nearly three-fourths as wide as the prothorax, somewhat coarsely, 

 densely punctate ; antennae rather robust, shorter than usual. Prothorax 

 about two-thirds wider than long, strongly convex, evenly and strongly arcuate 

 at the sides, very coarsely, deeply punctate, the punctures sparse toward the 

 middle, very densely crowded and longitudinally coalescent laterally. Elytra 

 subequal in width to the prothorax and about three times as long, rather 

 obtusely to acutely ogival at apex; sides parallel and nearly straight . ; disk 

 coarsely, deeply punctate, the punctures forming approximate series toward 

 the sides. Abdomen very feebly alutaceous, more or less finely, sparsely but 

 distinctly punctate ; nietasternum rather short, a little longer than the first 

 ventral segment. Legs rather short and robust, the posterior tarsi very dis- 

 tinctly shorter than the tibiae. Length 5.9-6.2 mm. ; width 2.2-2.5 mm. 



Arizona. Mr. Morrison. 



A small subcylindrical species, allied in structural characters to 

 perforatum, but differing greatly in appearance. The types of 

 sculptile and papagonum are distinctly narrower, more slender and 

 more depressed than those of emarginatum and piceum, the differ- 

 ence being sexual. In sculptile the surface is very dull throughout, 

 the type being apparently an abnormal specimen. 



Ell. flisculuill n. sp. — Oblong-elongate, parallel, rather strongly con- 

 vex, polished, dark rufo-castaneous throughout. Head moderate, transverse, 

 broadly, evenly truncate at apex, moderately coarsely, deeply, densely, 

 somewhat unevenly punctate and subrugulose ; eyes and superior folds well 

 developed ; antenna? moderate, the third joint nearly three times as long as 

 wide. Prothorax nearly four-fifths wider than long, the apex slightly uarrower 

 than the base, broadly, very feebly emarginate in circular arc, the angles very 

 slightly obtuse but not in the least blunt ; base transverse, very feebly sinuate 

 at each side of the middle, the angles distinctly obtuse but not at all rounded ; 

 sides evenly and rather strongly arcuate throughout ; disk very convex, deeply 

 punctate, the punctures not very coarse, rather sparse except near the sides 

 where they are but slightly coarser, very densely crowded and longitudinally 

 coalescent. Elytra subequal in width to the prothorax and rather more than 



