CERAMBYCID/E 325 



at any rate they are both widely different from hirsuticolle in posi- 

 tion of the thoracic angulation at the sides and in the very much 

 more slender antennae of the latter, irrespective of coloration. 



Under my description of aitripenne (1. c.), I confused two distinct 

 though allied species as defined above. The true aitripenne is a 

 small and slender, delicate species, with minute and inconspicuous 

 lateral thoracic tubercles and inhabits only southwestern Utah so 

 far as known. The other, named densiventre in the above state- 

 ment, and from Arizona, is materially larger, stouter and with much 

 longer and thicker legs, but not so large as annulatum, although 

 agreeing in the antenna?; it also has small thoracic tubercles as in 

 coquus, which could in no way answer to LeConte's description of 

 annulatum. That either of these species could be the true an- 

 nulatum, as definitely stated by Mr. Schaeffer, is therefore wholly 

 inadmissible. 



Purpuricenus Serv. 



The following species seems certainly more appropriately placed 

 in Purpuricenus than in Metaleptus, the latter as represented by 

 such forms as angulatus and batesi, being of distinctly different 

 facies. In describing batesi it is singular that Dr. Horn did not 

 draw attention to the remarkable sexual differences, the male being 

 much more slender than the female, the elytra gradually and 

 arcuately narrowing from slightly behind the middle, and not 

 abruptly broadly rounded at apex, and the prothorax less trans- 

 verse and more parallel; in the female it is very rapidly narrowed 

 anteriorly before the tubercles, giving a totally different habitus. 



*Purpuricenus lecontei n. sp. Subcylindric, convex, deep opaque 

 black and everywhere very finely, densely but not deeply punctate and 

 with very short, fine, inconspicuous hairs, more distinct on the under 

 surface and erect and bristling on the flanks of the prothorax; elytra 

 throughout bright and pure scarlet, with a dense opaque velvety lustre 

 and finely, not densely punctate, with three feebly marked discal lines 

 on each, not attaining the apex; head finely, densely punctured and 

 opaque, clothed with pale erect pile, the antennal tubercles not elevated 

 as they are in hiimeralis; antennae very slender, not as long as the body,, 

 with rather stout basal joint, the third two-fifths longer than the fourth, 

 four to seven decreasing just perceptibly, the remainder missing in the 

 type; prothorax three-fifths wider than long, the apex two-thirds as wide 

 as the base; sides angulate and acutely tuberculate just behind the middle, 

 thence converging and nearly straight to base and apex; surface opaque, 

 subglabrous, the fine and feeble punctures parted along the median line; 



