Coleojyfer'ological Notices, VI. 621 



N. catidatus. — Elongate-suboval, strongly convex, somewhat shining but 

 aliitaceous, black; legs dark rufous, the antennae rufo-piceous ; integuments 

 subglabrous, the pronotal punctures bearing minute decumbent hairs and the 

 elytral asperities bearing much inclined coarse setae, which are quite distinct 

 toward the sides. Head scarcely two-thirds as wide as the prothorax, slightly 

 transverse, with rather small, deep, distinct and separated punctures, the 

 apical emargination broad and subangulate; antennae long, fully as long as the 

 head and prothorax, the third joint much more than twice as long as wide and 

 rather longer than the next two, club only slightly abrupt, the penultimate 

 joints nearly as long as wide, the eleventh not narrower. Prothorax feebly 

 transverse, barely two-fifths wider than long, widest somewhat before the 

 middle but with the sides evenly and feebly arcuate throughout, not becoming 

 straight posteriorly, just visibly sinuate for a very short distance before the 

 basal angles which are right, not rounded and scarcely at all posteriorly prom- 

 inent, the base transverse, becoming very feebly sinuate near the basal angles; 

 apex quite distinctly narrower than the base, very evenly emarginate in cir- 

 cular arc, the angles distinct and only slightly blunt; disk evenly smooth and 

 convex, finely, deeply evenly and somewhat sparsely punctate, the punctures 

 becoming gradually a little coarser, denser and less defined toward the sides; 

 intersj)aces shining. Elytra fully three-fifths longer than wide, more than 

 twice as long as the prothorax, and, in the middle, one-fourth wider; sides 

 evenly arcuate; humeri broadly rounded, not exposed; apex acutely and grad- 

 ually ogival, each elytron produced in a short punctate and pubescent caudal 

 appendage; sulci deep, punctate, the intervals each with a single even series 

 of coarse asperities. Abdomen convex, shining, distinctly but sparsely punc- 

 tate, the propleurae longitudinally rugose; legs rather long, the femora only 

 feebly inflated toward apex. Length 5.8 mm. ; width 1.9 mm. 



Arizona. 



The type of this distinct species is a female, the anterior tibiae 

 and abdomen being unmodified, the fifth segment of the latter 

 nearl}' flat and almost semi-circular. 



X. rul>ripes. — ^Moderately slender and convex, strongly alutaceous, 

 black, the head rufescent anteriorly ; antenna? infuscate in the middle; legs 

 rufous throughout ; integuments subglabrous. Read fully two-thirds as wide 

 as the prothorax, broadly, angularly emarginate at apex, densely punctate ; an- 

 tennae not as long as the head and prothorax, the third joint about twice as 

 long as wide, the clul> but slightly abrupt, the tenth joint distinctly trans- 

 verse. Prothorax nearly as in caudatus, the punctures slightly coarser and dis- 

 tinctly denser. Elytra scarcely more than one-half longer than wide, twice 

 as long as the prothorax and nearly one-fourth wider, otherwise as in caudatus, 

 except that the apices are not at all produced posteriorly. Abdomen strongly 

 but not very closely punctate. Length 4.5 mm. ; width 1.7 mm. 



Arizona. Mr. Wickham. 



The type of this species is also a female, and is verj^ closely 



