236 SEEEICOENIA. 



While not notably different in form, this species differs from al] those with long 

 antenna? by the almost complete obliteration of the elytral striae. Two males have 

 been seen. 



7. Plesiofornax inutilis. 



Oblong, piceous-black, shining, scarcely pubescent : antennae slender, ferruginous, a little longer tban half the 

 body ( $ ), formed as in P. pectoralis : head convex, closely coarsely punctate, a triangular depression in 

 front, the interocular ridge well elevated, nearly entire, merely slightly notched at the base of the 

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

 sides arcuately narrowing to the front, disc moderately convex, punctuation moderately coarse, but with 

 smooth intervals ; elytra striate, intervals flat, much more finely punctate than the thorax and not closely ; 

 propleural triangle punctate at the inner side and base, the larger part of its area smooth ; body beneath 

 piceous, the margins of the ventral segments paler ; abdomen rather closely punctate ; legs ferruginous, 

 first joint of the hind tarsus shorter tban the others together, last joint long and slender, claws simple. 



Length 7-8 millim. 



Hob. Nicaeagua, Chontales (Belt) ; Panama, Bugaba (Champion). 



This species might be taken for a small P. pectoralis ; but the punctuation of the 

 thorax beneath will readily separate it. 



8. Plesiofornax glandifer. 



Oblong, moderately robust and convex ( $ ), piceous, slightly shining, very sparsely pubescent : antennae 

 ferruginous, not as long as half the body, the joints having the same relative length as in P. pectoralis, 

 but shorter ; head convex, coarsely and closely punctate, a slight concavity near the clypeus, interocular 

 carina well elevated, not extending across the clypeus, but continued by a smooth line, clypeus narrower at 

 the base than half the distance to the eye ; thorax broader at the base than long, sides arcuately narrowed 

 from the hind angles to the front, disc convex, a slightly elevated, short, median smooth line posteriorly, 

 surface coarsely and closely punctate ; elytra faintly striate, the intervals much more finely punctate 

 than the thorax and rather sparsely, sides parallel, narrowed at the apical third; propleural triangle 

 punctate sparsely over its entire surface, and with a large oval pubescent fovea in the front angle ; body 

 beneath brown, abdomen rather closely punctate ; legs brown, first joint of the hind tarsus shorter than 

 the others together, the claw-joint slender and long, claws simple. 



Length 10 millim. 



Eab. Panama, Volcan de Chiriqui 3000 feet (Champion). 



It is possible that the propleural fovea is sexual. One female specimen seen. 



9. Plesiofornax opaculus. 



Oblong, moderately convex, piceous, opaque, sparsely clothed with short reddish-brown pubescence : antennae 

 slender, ferruginous, three fourths the length of the body ( <$), first joint nearly as long as the next 

 three, second small, third scarcely longer, joints 3-11 successively longer ; head convex, front rather flat, 

 densely subrugosely punctate, interocular carina finely elevated, broadly interrupted, clypeus nearly half 

 as wide at the base as the distance to the eye ; thorax much wider at the base than long, sides arcuately 

 narrowing to the front, disc moderately convex, densely rugosely punctate ; elytra gradually narrowed 

 from the base, distinctly striate, intervals flat, densely submuricately punctate, with a tendency to 

 form transverse strigae ; body beneath more shining than above, densely punctate ; propleural triangle 

 densely punctate, the antennal groove distinct but sparsely punctate ; legs brownish, first joint of the hind 

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



' Length 7*5-9 millim. 



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



