70 THE CANADIAN ENTOMOLOGIST. 



may possibly extend at times down the dark sutural space described 

 above, as this region shows evidence of scales in places ; costa obliterated. 

 Body beneath almost entirely concealed by white pubescence, the ex- 

 posed portions imbricate-punctate, the abdomen more finely so. Last 

 ventral serrate at sides. Pygidium with a projecting carina, which 

 is truncate at tip. Legs sparsely pubescent. Length, g mm. 



The type is a female taken in October at Parker's Well, on the 

 eastern side of the Organ Mountains, New Mexico, by Theo. D. A. 

 Cockerell, and bears his number, 5295. Another specimen which I 

 collected during June, in the Pinal Mountains, Arizona, differs in colour, 

 the head being cupreous, the elytra red-bronze with green sutural space. 

 The under side of the body and the legs are also brightly bronzed, 

 the pleura and margins of the ventral segments darker. In other respects 

 the two correspond. 



This beetle belongs near Agrilus audax, Horn, but differs in having 

 a non-carinate scutellum and by the arrangement of the pubescence. The 

 claws are sharply and strongly toothed beyond the middle, the inner 

 division not notably inflexed. 



A. niercurius, n. sp. — Rather robust, olivaceous bronze ; elytra and 

 thorax vittate with white pubescence. Head coarsely and confluently 

 punctured, front covered with rather long white hairs, median line faint. 

 Antennas passing the middle of the thorax, serrate from the fifth joint. 

 Thorax broader than long, sides arcuate, but less so than in blandus, 

 sinuate in front of the hind angles, which are not carinate, disc gibbous, a 

 faint depression posteriorly in place of the median line, surface coarsely, 

 densely ])unctate, forming more or less distinct concentric strigae, which 

 are stronger anteriorly, margin sinuous in profile ; on each side is a large 

 spot of white pubescence, beginning at the anterior angle and extending 

 to behind the middle, this s|)Ot confluent above with a longitudinal stripe 

 of the same colour, which extends from a point on the thoracic disc op- 

 l)osite the apex of the gibbosity to base, where it meets the elytral vitta. 

 Scutellum not carinate. Elytra not covering the sides and tip of abdomen, 

 coarsely scabro-punctate, not costate, margin serrulate posteriorly, apices 

 obtuse, disc of each elytron with a vitta of perfectly white pubescence ex- 

 tending from base, where it is confluent with the corresponding thoracic 

 stripe, to the apex. Pygidium with a fine carina, which does not project- 

 Prosternal lobe well developed, with a broad, slightly indented, rounded 

 emargination on front margin, presternum densely clothed with white 



