98 Mr. G. C. Champion's Revision of the Mexican 



slender, joint 2 about half the length of 3 ; prothorax transversely 

 subquadrate, uneven, the margins narrowly refiexed, trisinuate, 

 dilated into a blunt tooth anteriorly, and with acute projecting 

 hind angles; elytra moderately long, wider than the prothorax, 

 subparallel, finely sculptured and obsoletely costate ; legs slender. 



Hab. Guatemala, Zapote, Cerro Zunil, both on the 

 Pacific slope. 



Three females seen. This insect can be provisionally 

 placed under Polemius; it has obviously nothing to do 

 with Telephorus sensu stricto. 



37. Polemius rugipennis. 



Telephorus rugipennis, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 90. 



$. Anterior portion of head, base of antennae, refiexed margins of 

 prothorax, and a large subquadrate space on each side behind, 

 coxae, and femora to near the tip, fiavous or testaceous, the rest 

 of the body in great part nigro-piceous. Eyes small ; mandibles 

 curved ; apical joint of palpi stout ; antennae long, rather slender, 

 joints 3-11 flattened, slightly tapering towards the tip; prothorax 

 transverse, the margins rounded, feebly sinuate, refiexed throughout, 

 the hind angles acute, the disc excavate down the middle pos- 

 teriorly; elytra rather coarsely, densely, granulato-punctate and 

 feebly costulate. 



Hab. Guatemala, Zapote, on the slope of the Volcan 

 de Fuego. 



Gorham was unable to identify the sex of the three 

 specimens he described under the name T. rugipenfiis : 

 they are certainly females. The rough elytral sculpture 

 is suggestive of that of Silis sicula, Gorh., approaching 

 that of Parasilis. 



Silis. 



Silis, Latreille. Kegne Anim., ed. 2, iv, p. 47 (1829) ; Leconte, 

 Trans. Am. Ent. Soc. v, p. 60 (1874), and ix, p. 56 

 (1881) ; Gorham, Biol. Centr.-Am., Coleopt. iii, 2, p. 91 

 (1881) (part.). 



Ditemnus, Leconte, Class. Coleopt. N. Am. p. 189 (1861); 

 Trans. Am. Ent. Soc. ix, p. 57. 



The heterogeneous forms here placed under Silis, after 



