OF PniLADELPHIA. 235 



PSELAPHUS Herbst. Latr. 



1. P. CARINATUS. — Keddish-browu ; elytra rectilincarlj trun- 

 cated ; tergum tricarinate, and with an elevated edge ; anterior 

 tibia arcuated. 



Inhabits the United States. 



Body with short hairs : head deeply indented on the front ; 

 vertex with two small indentations : maxillary palpi with the 

 throe last joints dilated ; the ultimate one triangular or cordate, 

 being widely emarginate at tip ; the inner lobe somewhat mucro- 

 nate ; penultimate joint also large and triangular, with a slender 

 spine or seta as long as the joint placed on the exterior angle ; 

 antepenultimate joint rounded, with a spine on the exterior side, 

 similar and equal to that of the other joint : thorax rounded, 

 somewhat angulated on the middle of the side, punctured : elytra 

 not quite half the length of the abdomen ; minutely punctured, 

 with two obtuse, elevated lines on each, obsolete before the tip, 

 and with an impressed groove between them : tergum rather 

 darker than the elytra, carinated along the middle, and with an 

 abbreviated, carinate line each side at base ; edge elevated : an- 

 terior tibia somewhat arcuated, gibbous before in the middle. 



Jjcngth less than one-tenth of an inch. 



This species is not uncommon, and is often found under the 

 loose bark of the yellow pine ; it [98] is referrible to the genus 

 Glenisds Reich. The elytra are terminated by a straight line 

 like those of the dirsifiunif:. It seems probable that the cordate, 

 terminal joint of the niaxillarj' palpi, and the two elongated 

 spines of the preceding joints, may be peculiar to one sex, as a 

 specimen in my collection has but a single spine, and the termi- 

 nal joint is acute and not dilated. 



[Belongs to Triwsiphorus. — Lec] 



2. P. RirARlu.s. — Reddish-brown ; elytra rectilinearly trunca- 

 ted, half the length of the tergum ; tergum simple ; anterior tibia 

 rectilinear. 



Inhabits Missouri. 



Vertex convex, with an impressed line each side : antennae, 

 joints from the third to the eighth, inclusive, subequal ; ninth a 

 1824.] 



