NORTH AMERICAN COLEOPTERA. 117 



rounded; abdomen long, willi five segments exposed ; sides deeply margined, apex 

 obtuse; legs and antennae moderate, yellow. 



Differs from Pt. testacea in its short and abruptly constricti'd thorax, 

 very short elytra, and shorter legs and antennae. 



lldh. — '• El Reposo," Guatemala, at an altitude of 800 feet, by Mr. 

 Champion. 



1*1. pelllK'ida n. sp.— L. c. .fiS mm. — Rather Ijroad and depressed; moder- 

 ately shining. % yellow, 9 eastaneoiis, thiekly clothed with pale hairs; head 

 large, rounded in front, 9 eyes large an<i prominent, % eyes wanting; thorax 

 small, transverse, mucli shorter, and not wider than the head, widest near the mid- 

 dle, ornamented with large tubercles in transverse rows; sides strongly margined, 

 rounded anteriorly, and contracted towards the base, hinder angles right angles; 

 on the disk are two indistinct impressions; elytra short, not wider or longer than 

 the head and thorax, widest at the aj)ex, deeply asperate in straight transverse 

 rows; sides margined, nearly straight, apex broad, and very much rounded: ab- 

 domen broad, five segments e.xjwsed. aj)ical segments acuminate; legs and antennte 

 long and robust, yellow. 



Differs from the other species in its elytra dilated at the apex, and 

 broad abdomen. 



Guatemala (Champion). 



Pt. Piili LeConte Smiths. Misc. Coll. i, p. f,2, ISfif).— L. c. S,?,—.lb mm.— 

 Elongate narrow, '^ pale yellow, rather thickly clothed with golden hair; head 

 rather long, rounded in front; eyes % wanting; thorax small, shorter and scaroelv 

 })roader than the head, rather remotely and faintly tuberculate; sides moderately 

 rounded, contracted towards the base : hinder angles nearly right angles; elytra 

 short and narrow, shorter and not wider than the head and thorax, remotelv and 

 faintly asperate: sides nearly parallel, apex sliglitly rounded; abdomen long, six 

 segments exposed, apical segment acute; legs and untennte long, robust, pale 

 yellow. 



Differs from Pt. pelludda in its narrow .shape and long pointed abdo- 

 men ; 9 has not yet been found. 



United States (Dr. LeConte). 



Pt. Qiierciis LeConte Smiths. Misc. Coll. i, p. fi."?, 1866.— L. c. .50— .63 mm,— 

 Moderately elongate, narrow, % pale yellow, 9 more or less castaneous, sparingly 

 clothed with pale hair; head very large, much rounded in front; eyes 9 rather 

 large, % wanting; thorax rather wider, but not longer than the head, widest be- 

 fore the middle, alutaceous, scarcely tuberculate; sides slightly margined, widest 

 before the middle, and constricted towards the base, hinder angles acute: elytra 

 short, shorter and rather narrower than the head and thorax, widest towards the 

 apex, remotely and deeply asperate, apex broad, almost straight; abdomen rather 

 long, and rather obtuse, five segments exposed : eyes and antennje robust, pale 

 yellow. 



Differs from the others in its smaller size, large head, constricted thonjx 

 and shorter elytra. P. niffrovitfis LeConte is the 9 <'f ^his species. 



United States (Dr. LeConte and Motschulsky). 



(30) 



