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



Moderately elongate, narrow (cJ), broader ($), somewhat shining, 

 thickly clothed with rather coarse cinereous pubescence; black, 

 the head on each side in front, and the sides of the prothorax broadly 

 (leaving a large, anteriorly dilated, broad black median vitta), 

 or at least narrowly at the base, flavous or rufescent. Eyes small. 

 Antennae subfiliform, rather stout, shorter in $, sparsely pilose. 

 Prothorax (,^) subquadrate, binodose on the disc towards the base, 

 the sides deeply, angularly emarginate at about the middle, the 

 hind angles prominent; ($) broader, strongly transverse, the sides 

 trisinuate, the hind angles acute and still more prominent. Elytra 

 moderately long, wider than the prothorax, parallel, rugosely 

 sculptured. Inner claw of anterior tarsi cleft at the tip and with 

 a large triangular tooth at base, and the outer claw of the other 

 tarsi cleft, in ^. 



Length (excl. head) 4|-6, breadth l|-2 mm. ((J $.) 



Hab. Guatemala, Calderas on the slope of the Volcan 

 de Fuego, Quiche Mts., San Geronimo. 



Gorham confused two perfectly distinct species under 

 D. cinereum, but the localities quoted and the specific 

 name adopted could only apply to the present insect, 

 the other, from the Quiche Mts. only, D. nigropilosum, 

 having black pubescence, very long, dilated, subserrate, 

 bristly antennae in the male, etc. The colour of the pro- 

 thorax varies according to the development of the black 

 median vitta, this latter being sometimes so extended as 

 to leave a small space at the hind angles only flavous. 

 Fourteen specimens seen, three of which were found 

 placed under Silis dilacerata in the " Biologia " collection. 



10. Discodon tenue. 



Discodon tenue, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, 

 p. 286. 



Narrow, slender, shining, cinereo-pubescent ; nigro-piceous or 

 black, the anterior portion of the head, the base of the antennae, 

 the prothoracic margins (a space beyond the middle of the lateral 

 margin in (^ excepted), the coxae and trochanters, the basal half of 

 the femora, and the abdomen in part, flavous or testaceous. Eyes 

 small. Antennae slender, long. Prothorax transverse, binodose 

 on the disc behind, abruptly constricted behind the middle in (^, 

 the lateral margins narrowly reflexed, the hind angles prominent; 

 broader and with the margins strongly trisinuate in $. Elytra long, 

 a little wider than the prothorax, subparallel. Inner claw of anterior 



