Leconte] BASITROPINI. 401 



1. P. Chamaeropis, n. sp. 



Elongate-cylindrical, brown, mottled with fine pubescence of gray, yel- 

 low, fulvous and black colors; bead and prothorax coarsely punctured; 

 elytra with the first and alternate interspaces slightly more convex, tessel- 

 lated with black and yellow; the intervening spaces with cinereous hair. 

 Under surface mottled; metasternum densely clothed with yellowish-white 

 pubescence. Legs and antennae also mottled vv^ith gray and dark brown 

 pubescence; the outer half of the ninth and the whole of the tenth and 

 eleventh joints of the antennae are nearly black. Length ((j^) 7.3-11 mm. ; 

 .29-. 44 inch; (?) 4.5-9.3 mm.; .18-.37 inch. 



Florida, abundant on Ghamwrops palmetto; Messrs. Hubbard and Schwarz. 



The antennae of the smallest (^ are scarcely longer than the body; those 

 of the largest are nearly double the length. This is Anthribus cylindricus { 

 Dej. Cat. 



PIEZOOORYNUS Sch. 



Body stout, cylindrical. Beak broad, flat, not as long as wide, not emar- 

 ginate at tip; antennal cavities large and deep, not extending to the eyes, 

 partially covered by the sides of the beak. Eyes subtriangular, coarsely 

 granulated. Antennae (J*)* one-half longer than the body; first joint stout. 

 rounded; second nearly twice as long, conical; 8-8 more than twice as long 

 as the second, slightly thickened towards the tip; 5-8 feebly carinate on the 

 outer face; eighth more flattened towards the tip than the others, 9-11 

 forming a compressed, elongate club, pubescent and sensitive, in which the 

 tenth and eleventh joints together are shorter than the ninth; the last 

 named is obliquely emarginate at tip, and twice as long as wide; the tenth 

 is transverse and similarly emarginate. Mentum with the lobes subacute at 

 tip, the emargination rounded, and the buccal fissures rather wide. Pro- 

 thorax wider than long, truncate at base, with the ridge flexed rectangu- 

 larly at the hind angles, and extending along the sides nearly to the tip; 

 sides gradually converging and slightly rounded. Elytra not wider than 

 the prothorax, with punctured striae; third and fifth interspaces wider and 

 slightly more convex. Front coxae nearly contiguous; tarsi with the first 

 joint a little longer than the second, which is broad, triangular and emar- 

 ginate; third joint wider than the second, deeply bilobed; claws broadly 

 but not strongly appendiculate. 



The antennae of the ? are about one- half as long as the body; the second 

 joint is longer and more slender; the subsequent joints 3-8 are about one- 

 half longer than the second, and the cfub is broader. 

 Antennae not very slender ; prothorax with two shallow de- 

 pressions and three elevations occupying the middle 



third 1- dispar. 



Antennae very slender ; prothorax without impressions or 



elevations ; pubescence mottled yellow brown and black 2. mixtus. 



*-This description is made from P. dispar; it is still doubtful if the sexual dif- 

 ferences exist in the other species. 



PROC. AMER. PHILOS. SOC. XV. 96. 3y 



