PLELSIOFOENAX. 237 



This species is easily known by its opaque surface, and by the short third joint of 

 the antennae. Only males have been seen. 



10. Plesiofornax imperitus. 



Oblong, moderately convex, ferruginous or brown, subopaque, sparsely clothed with fulvous pubescence : 

 antennae slender, two-thirds as long as the body, second joint very short, less than half as long as the 

 fourth, third and fifth equal, joints 4-11 increasing in length ; head convex, densely rugosely punctate, 

 interocular carina moderately elevated, continuous across the base of the clypeus, this less than half as 

 wide as the distance to the eye ; thorax wider than long, sides straight, slightly convergent, arcuate near 

 the apex, disc moderately convex, a faint median impression near the base, surface densely, moderately 

 coarsely punctate, not rugose; elytra striate, closely punctate, less coarsely than the thorax, slightly 

 transversely wrinkled at the base ; propleural triangle densely subrugosely punctate, the antennal groove 

 shining but obsoletely punctate ; abdomen densely finely punctate ; legs paler, the first joint of the hind 

 tarsus not so long as the others united, the claw-joint long and slender, claws simple. 



Length 8-9*5 millim. 



Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 



An inconspicuous species allied to P. badius by its entire interocular carina, but 

 differing especially in the form of the antennse. 



11. Plesiofornax badius. 



Oblong, moderately convex, pale castaneous, subopaque, indistinctly fulvo-pubescent : antennse slender, ferru- 

 ginous, as long as half the body, the joints formed relatively as in P. pectoralis ; head convex, a vague 

 concavity anteriorly, densely rugosely punctate, interocular carina well marked, extending across the 

 base of the clypeus, this less than half as wide as the distance to the eye ; thorax wider than long, sides 

 arcuately narrowing nearly from the hind angles, disc moderately convex, a short, smooth, median line 

 posteriorly, surface densely not deeply punctate, somewhat rugose near the front angles ; elytra narrowed 

 nearly from the base, distinctly striate, intervals flat, submuricately punctate, sparsely near the apex, more 

 closely near the base ; body beneath a little paler than above, rather densely punctate ; propleural triangle 

 densely punctate, the groove smooth ; legs ferruginous, the first joint of the hind tarsus scarcely so long as 

 the other joints united, the claw-joint slender and long, claws simple. 



Length 8 millim. 



Hab. Panama, Bugaba (Champion). 



In general appearance very like some of the species of Fornax, and by this as well 

 as by the well-marked entire interocular carina it is known from all the preceding 

 species. 



12. Plesiofornax elongatus. 



Elongate, subcylindrical, narrower posteriorly, ferruginous-brown, feebly shining, sparsely pubescent : antennae 

 slender, two-thirds as long as the body, the joints formed as in P. pectoralis ; head convex, front slightly 

 flattened, densely and subrugosely punctate, interocular carina moderately elevated, interrupted at the 

 base of the clypeus, which is more than half as wide as the distance to the eye ; thorax wider at the base 

 than long, sides parallel for a short distance behind, tben arcuately narrowed to the front, disc mode- 

 rately convex, densely subrugosely punctate ; elytra narrowed nearly from the base, striate, intervals flat, 

 densely submuricately punctate and somewhat transversely wrinkled on the basal half; propleurse densely, 

 subrugosely punctate, the antennal groove narrow ; abdomen densely and rather finely punctate ; legs 



