NORTH AMKRICAN COLEOl'TERA. \-\ 



^Iesosternum rather large, sliiilitly carinate, carina produced between 



the eoxal cavities ; eptsterna large, humeral ; epimera very large and 



broad, reaching the coxal cavities. 

 3Ietasterni'.m rather short, not extending to the sides; epistcnin large 



and broad, not reaching to the coxaj ; epimera very large and broad, 



reaching to the venter ; coxa3 very widely separated. 

 A'enter composed of six segments, with the basal and apical segments 



longer than the rest. 

 Legs long and robust, tarsi S-jointed, with the basal joint twice as large 



as the second, terminal joint long and slender, claws long and slender ; 



posterior tibiaa dentate on the inner edge with two strong spurs near 



the apex. 

 Cox^E ANTERIOR contingent. 



intermediate separated by the carina. 



POSTERIOR large and very prominent, very widely separated, 

 broadly laminated on the exterior margin, lamina triangular. 



This genus seems intermediate between Ptenjx and Pflnella ; from 

 the former it diflFers in having six ventral segments, and in the wide sepa- 

 ration of the posterior coxae ; from the latter in the length of the elytra, 

 and from both in the small size of the ninth joint of the antennae, the 

 long and peculiarly formed labial palpi, the diverse form of the maxilltii 

 and small size of the maxillary palpi, the metasternum not reaching the 

 sides of the body, and in the broadly laminated posterior coxae. 



P. Salviiiii n. sp. — L. c. .87 — 1 mm. — Sub-ovate, very couvex, shining, trans- 

 lucent castaneous, thickly clothed with very short golden hair; head large and 

 broad, prominent, mouth yellow ; eyes large, and rather prominent; thorax mod- 

 erate, rather wider but not longer than the head, widest near the middle, con- 

 stricted near the base, regularly marked with foveolate punctures, interstices alu- 

 taceous; sides anteriorly rounded and very broadly margined, near the base 

 constricted, and not margined, basal margin slightly sinuated, with the angles 

 acute and prominent; elytra ovate, translucent, antennse longer, but scarcely 

 wider than the head and thorax, widest near the middle, covered with deep, re- 

 mote, asi)erated punctures in curved rows, the interstices finely alutaceous; sides 

 rounded, slightly margined, apex broad and much rounded ; abdomen convex 

 with three segments exposed, the two last segments yellow; eyes and antennte 

 long and slender, bright yellow. 



Two specimens of this beautiful species were found by !Mr. Champion 

 on (Vrro Tunil, in ( Juatemala, at an altitude (tf from 4(10(1 to r)(l(K) feet. 



PTKRYX. 



Matthews, Zool.. p. r.OlT. IS5S. 

 AntenN/E 11 -jointed, each joint I'urnished with a whorl of long setne. 

 three last joints very much incrassated, forming an elegant moniliform 

 club. 



THANS. AMKIt. KNT. SOC. XI. (31) APRIL, 1884. 



