472 Coleopterological Notices. 



feebly but somewhat broadly reflexed laterally, rather finely, extremely 

 densely punctate throughout, the punctures forming long longitudinal rugae, 

 less marked and finer toward the middle. Elytra oval and subinflated, widest 

 in the middle, at base feebly emarginate and coarctate throughout with the 

 prothorax, two-fiftbs wider than the latter and more than twice as long, rather 

 acutely rounded at apex ; disk very finely but evenly and distinctly striate, 

 the striae extremely finely punctate, the punctures rather approximate and not 

 larger toward base ; intervals nearly fiat toward base, strongly evenly convex 

 posteriorly, very minutely and somewhat densely punctate. Abdomen shining, 

 very finely, somewhat sparsely punctate. Legs long and rather slender. 



Male. — Sexual characters not determined. 



Length 4.6 mm. ; width 2.0 mm. 



Lower California (Cape San Lucas). Cab. LeConte. 



A very distinct species which conld not possibly be confounded 

 with any other, its rather inflated el_ytra, dull, densely punctate 

 integuments and long antenna? at once distinguishing it; the epi- 

 pleune are relatively very wide, resembling somewhat those of 

 gagates. The bases of the prothorax and elytra are exactly equal 

 in width, the humeri not exposed. 



The unique type is probably a male, but exhibits no decided 

 sexual modification. 



It is highly probable that the Arizona specimens, hitherto referred 

 to this species, have been incorrectly identified. 



C. Slllcatus Lee. — Notibius sale. : Ann. Lye. N. Y., V, p. 145. — Oblong- 

 oval, strongly convex, moderately shining, black ; legs and antenme rufous ; 

 vestiture as in seriatus, but with the' seta? still more infinitesimal. Head 

 moderately transverse, the sides near the eyes parallel and straight ; epistoma 

 broadly, deeply sinuate ; surface nearly fiat, finely, very densely punctate ; 

 upper lobe of eye extremely small and narrow ; antennae robust, rather com- 

 pact, moderately incrassate toward apex and much shorter than the head and 

 prothorax together, third joint fully as long as the next two, eleventh narrower 

 than the tenth. Prothorax about two-thirds wider than the head and nearly 

 one-half wider than long ; base rather distinctly wider than the apex, trans- 

 verse, the lateral sinuations distinct ; basal angles nearly right and narrowly 

 rounded ; sides very feebly arcuate ; apex extremely feebly incurvate ; disk 

 widest at about the middle, very feebly explanate near the sides, finely and 

 very densely punctate throughout, the punctures neither muricate nor greatly 

 coalescent. Elytra at base distinctly narrower than the base of the prothorax, 

 at the middle a little wider than the disk of the latter, rather more than twice 

 as long ; sides evenly and very distinctly arcuate ; disk with very coarse, 

 deeply and roundly impressed striae, which are coarsely, moderately approxi- 

 mately and very feebly punctate ; intervals very convex, equal throughout 

 the width, subequal in width to the striae, minutely and sparsely punctate. 

 Abdomen sparsely and minutely punctured. Leys rather long. 



