XOirni AMERIPAN COLEOPTKRA. 145 



head rallier large, prod uceil in front; eyes large and prominent; thorax small and 

 short, shorter and scarcely wi(fer than the head, widest near the middle, closely 

 covered with rather large tubercles; sides rounded, posterior angles obtuse; elytra 

 elongate, oval, scarcely wider but more than twice as long as the head and thorax, 

 widest near the middle, moderately asperate in distant transverse rows, apex 

 sliglitly rounded ; legs and antennse short, robust, bright yellow. 



Differs from /■*. Colinnhinnnm in its much smaller size, short ami 

 robust legs and antennte, and in the sculpture of the thorax. 

 California (Crotch). 



P. Coliiinhianiiiii Matthews Cist. Ent. 2, p. 109, 1S77.— L. c. .87 mm.— 



Elongate, oval, convex, ferruginous or castaneous, rather thickly clothed with yel- 

 low hair; head large; eyes large and prominent; thorax rather small, rather 

 wider and shorter than the head, widest at the base, ornamented with distinct and 

 rather large tubercles, the interstices shining; sides margined and much rounded, 

 ])osterior angles rounded; elytra long, elongate, oval, rather wider and almost 

 twice as long as the head and thorax, widest behind the middle, rather deeplv as- 

 perate in distinct transverse rows, apex broad and slightly rounded: legs and an- 

 tennre long, bright yellow. 



Differs from other species in its large size, elongate form, pale color, 

 and very long antennse. 



British Columbia and California (Crotch). 



P. Sharpi Mattliews Trich. lUust. p. 101, 1S72.— L. c. .87 mm.— Elongate, 

 convex, pitchy black, clothed with sliort golden hairs; head rather small; eves 

 large and very prominent; thorax small, scarcely longer or wider than the head, 

 widest before the middle, deeply and very closely tuberculate ; sides much rounded, 

 posterior angles obtuse; elytra large, ovate, broader and almost twice as long as 

 tlie head and thorax, widest near the middle, moderately asperate in transverse 

 rows, apex obtuse; legs and antennse dusky yellow; the latter rather long. 



Differs from other species in its largesize and pitchy black color. 

 Vancouver's Island (H. and J» Matthews). 



MILLIDIilM. 



Motschulsky Bull. Mosc. 41, p. 17f!. 1868. 



Antenn.e 11-jointed. 8-S rather stout. !)-ll much incrassated. formin<r 



a moniliform club. 

 Head porrected. 



Proxotl'M sn)all. .strongly constricted at the ba.se. 

 Elytra entire. 



Abdomen with the pygidium beyond the elytra. 

 Mk-sosternu.^i broadly earinated, with a very deep oval impression near 



the collum. 



TKANS. AMKlt. EXT. SOC. XI. ('H") MAV, lv884. 



