and Central American Telephorinae. 115 



very conspicuous. The prothorax of the female is not 

 widened posteriorly as in S. nigrita, and it is less transverse 

 than in S. panamensis. The antennae of the male are 

 densely pilose, as in S. panamensis. An abraded male 

 from Calderas with the prothorax and legs darker probably 

 belongs to the present species. 



22. Silis panamensis, n. sp. 



Silis nigrita, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, p. 293 

 (part.) (nee p. 93). 



Moderately elongate, shining, finely pubescent; nigro-piceous or 

 piceous, the anterior portion of the head, the base of the mandibles, 

 the sides of the prothorax broadly, the elytral humeri, and some- 

 times the femora in great part, testaceous. Mandibles abruptly 

 bent in $. Eyes moderately large in (J, smaller in $. Antennae (cJ) 

 as long as the body, closely pilose, joint 2 very small; ($) much 

 shorter, about reaching the middle of the elytra, more sparsely 

 pilose, joint 2 stouter. Prothorax (cJ) transverse, narrowed in 

 front and behind, bicallose on the disc towards the base, somewhat 

 rounded at the sides, the margins rather broadly explanate, and 

 obliquely plicate at about the basal third, appearing more or less 

 distinctly toothed in front of the fold; ($) broader, transversely 

 subquadrate, with the hind angles more distinct and the margins 

 thickened towards the apex. Elytra moderately long, broader 

 than the prothorax, somewhat widened posteriorly, roughly 

 sculptured. 



Length {excl. head) 4-4J, breadth 1^ mm. {(^ $.) 



Hab. Panama, Bugaba, Boquete, Volcan de Chiriqui 

 (Cha^npion). 



Five males and one female, the former quoted under S. 

 nigrita by Gorham and the latter left by him under S. 

 dilacerata, $. Smaller than the Guatemalan S. ohlita, the 

 head differently coloured ; the prothorax ((^) more feebly 

 plicate and less distinctly dentate at the sides, that of the 

 $ transversely subquadrate ; the mandibles of the $ 

 abruptly bent (as in S. ohlita), instead of curved. 



23. Silis ardua. 



Silis ardua, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, p. 298 



. . (^ ?)• 

 Silis pauper cida, var. ?, Gorh., loc. cit. p. 299. 



