492 COLYDIIDA. 
This is one of the smallest insects of the genus; the legs are shorter than usual, and 
the two long outstanding sete on the tibiee seem to be peculiar to it. We have 
received only one specimen from Mexico, but Mr. Champion procured a fair series at 
San Gerdnimo. 
PHILOTHERMUS. 
Philothermus, Aubé, Ann. Soc. Ent. Fr. 1843, p. 93; Erichson, Naturg. Ins. Deutschl. iii. p. 292; 
Horn, Proc. Am. Phil. Soc, xvii. p. 589. 
This genus at present is scarcely satisfactorily distinguished from Cerylon. Horn 
separates it chiefly on account of the open anterior acetabula; but this important 
character has not been examined by other describers, who have contented themselves 
with separating the two genera by means of a difference in the antennal club. Hence it 
is quite uncertain whether some of the species that have been treated as belonging to 
Cerylon should not rather be placed in Philothermus. In the present work I have 
made use of the ordinary mode of separating the genera, as the material before me is 
not sufficient to enable me to examine the acetabula in a satisfactory manner. 
The genus is not numerous in species at present, scarcely a dozen having been 
described; but they come from widely separated parts of the world. 
1. Philothermus politulus, sp. n. 
Brevis, piceus, sublevigatus, antennis pedibusque rufis; prothorace pernitido, elytrorum seriebus punctorum 
valde abbreviatis. 
Long. 14 millim. 
Hab. Guatemata, El Tumbador (Champion). 
Antenne small; club rather indistinctly divided. Thorax short, highly polished, with 
some rather large punctures on the middle behind; front angles deflexed, very little 
prominent; there is an extremely fine lateral margin. LElytra with three or four series 
of punctures, the sutura] one entire, the others abbreviated. 
We have received one example only of this distinct little species. Though 
looking exactly like a Cerylon, it seems that it must at present be placed in Philo- 
thermus. 
2. Philothermus gibbulus. 
Philothermus gibbulus, Reitter, Deutsche ent. Zeit. 1876, p. 303 - 
Hab. Mexico, Teapa (Mus. Deyrolle'). 
We have not received a specimen of this species. It is said to be a very small convex 
insect, with scarcely visible thoracic margin. It would from this appear to be nearest 
to P. politulus. 
