and Central American Telephorinae. 103 



5. Silis trilobata, n. sp. (Plate VIII, fig. 68, prothorax, (^.) 



Silis dilacerata, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, 

 p. 96 (part.). 



Comparatively sliort, tlie head and prothorax shining, the elytra 

 dull, thickly pubescent; nigro-piceous, the mandibles and prothorax 

 (a broad median vitta excepted, this being dilated at the base and 

 apex in <^) rufous or testaceous, the outer limb of the elytra obscure 

 testaceous. Eyes small. Mandibles curved. Antennae stout, 

 moderately long, tapering outwards. Prothorax ((^) strongly 

 transverse, as broad as the elytra, narrow at the base, very deeply 

 excavate on the disc, trilobate at the sides — the anterior lobe rather 

 long and narrow, reflexed and somewhat rounded externally, and 

 truncate behind, the posterior lobe longer, oblique, and cleft into 

 two, the upper portion broad and laminiform, the lower (posterior 

 portion) longer and narrower, both truncate at the apex ; ($) simply 

 sinuato-emarginate at the sides before the hind angles. Elytra 

 rather short, widened posteriorly in ^, subparallel in $, rather finely 

 sculptured. 



Length (excl. head) 4|-5, breadth 2-2^^ mm. {($ 9-) 



Hah. Mexico {Truqui, in Mus. Brit. : $), Juquila in 

 Oaxaca {Salle : (^ $). 



One male and two females, the pair from Juquila quoted 

 by Gorham under S. dilacerata. The lateral armature of 

 the (^ prothorax is very different in these two species, the 

 oblique posterior lobe in S. trilobata being divided into two 

 laminiform truncated processes. The two females have 

 the disc of the prothorax broadly vittate and deeply 

 excavate. 



6. Silis dilacerata. (Plate VIII, fig. 69, prothorax, ^.) 



Silis dilacerata, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, 

 p. 96, pi. 6, fig. 4 (c^) (part.). 



cJ. Eyes small ; antennae subserrate, rather stout, moderately 

 long, tapering outwards ; prothorax as broad as the elytra, narrow 

 at the base, deeply excavate on the disc, with two long lobes project- 

 ing outwards on each side, the anterior lobe rounded externally and 

 (as seen from behind) subtruncate posteriorly, the posterior lobe 

 oblique, unarmed in front, and more or less cleft at the tip. 



$. Prothorax simply emarginate at the sides before the base. 



(^. Ninth ventral segment transverse, the partially evaginated 



