PLESIOFOENAX. 235 



Similar to the preceding, but the propleurse are less densely punctate and more 

 shining. The legs are ferruginous and the entire surface is more decidedly punctate. 



3. Plesiofornax paganus. 



Oblong, piceous-brown, moderately shining, sparsely clothed with short semi-erect fulvous pubescence : 

 antennae ferruginous, formed as in P. pectoralis, but a little shorter in both sexes ; head convex, coarsely 

 and densely punctate, especially in front, impressed at the base of the clypeus, interocular carina well 

 elevated, narrowly interrupted at the base of the clypeus, this narrow, less than half the distance to the 

 eye ; thorax broader than long, sides nearly straight, convergent to the apex, arcuate near the front angles, 

 disc moderately convex, a punctiform impression each side of the middle of the base, where there is a 

 vague triangular flattening enclosing a short smooth line, surface coarsely, rather closely punctate, not 

 rugose ; elytra as in P. pectoralis, not closely punctate ; proplenral triangle coarsely punctate, punctures 

 at least as distant as their own diameters and continuing to the margin of the thorax ; legs ferruginous, 

 femora paler, first joint of the hind tarsus shorter than the others united, claws simple. 



Length 7*5-10'5 millim. 



Hab. Guatemala, El Tumbador 2500 feet (Champion). 



Differs from either of the preceding species in having the interocular carina nearly 

 entire. 



4. Plesiofornax confcederatus. 



Plesiofornax confcederatus, de Bonv. Mon. p. 472, t. 23. fig. 4'. 

 Hab. Mexico, Cordova (Salle *). 



5. Plesiofornax mandibularis. 



Plesiofornax mandibularis, de Bonv. Mon. p. 474, t. 23. fig. 5 \ 

 Hab. Mexico, Cordova (Salle x ). 



De Bonvouloir separates these two species on the form of the mandibles, the rugose 

 face being in the former narrow and in the present broad ; but with the types before 

 me this seems entirely illusory. They do differ in the punctuation of the thorax — in 

 the present species less dense with smooth intervals, and in P. confcederatus dense and 

 crowded. 



6. Plesiofornax longicornis. 



Oblong, piceo-castaneous, shining, sparsely clothed with fulvous pubescence : antennae ( <3 ) more than three 

 fourths the length of the body, slender, ferruginous, formed as in P. pectoralis, the third joint longer than 

 the fourth ; head convex, coarsely punctate, densely anteriorly, less closely posteriorly, interocular carina 

 distinct but not entire, clypeus at the base half as wide as the distance to the eye ; thorax wider than 

 long, sides feebly arcuately narrowing from the base to the apex, disc convex, rather sparsely and finely 

 punctate ; elytra obsoletely or not at all striate, finely and not closely punctate ; propleural triangle finely, 

 not closely punctate, the antennal groove deep and smooth : entire body beneath rather finely, not closely 

 punctate ; legs ferruginous, first joint of the hind tarsus not so long as the others united, claw-joint 

 slender and long, claws simple. 



Length 12 millim. 



Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion). 



2H2 



