NOTOXID.E. XYLOPHILUS EUGLENES. 77 



GrENus CCCCLXXV. — Xylofhilus, Latreille. 



Antennoe half the length of the body, the basal jomt slender, the second 

 joint short, the third long and thickened at the tip, the remainder shorter 

 than the preceding, and stout ; the terminal stouter and acuminate. Palpi 

 maxiUary with the terminal joint dilated and securiform ; head rather broader 

 than the thorax, the latter rounded, broadest behind : elytra half as wide 

 again as the thorax, with the apex rounded : legs elongate, with the hinder 

 femora incrassate. 



Xylophilus has the posterior femora considerably incrassated, and 

 the second joint of the antennae alo7ie subglobose, by which charac- 

 ters united the genus may be known from the preceding and the 

 following. 



•fSp. 1. Populneus. Testaceo-ferrugineus, suhtilissime punciulatus, tenuissime 

 sericeo-puhescens, elytris basi fascidque media denudatis, capite nigricante. 



An. Populneus. Fabricius, S. E. 1. 272. — Panzer, Faun. xxv. /. 4. — Curtis, 

 fo, 299. 



Testaceo-ferruginous, very finely and obscurely pimctured, clothed with fine 

 silky pubescence : head sometimes blackish ; base of the elytra and fascia 

 in the middle denuded of pubescence. 



Found in summer within the metropolitan district, on trees ; 

 beneath bark during the winter. — Curtis, I. c. 



Genus CCCCLXXVI.— Euglenes, Westwood. 



Antennce inserted beneath the eyes ; in the male nearly as long as the body, 

 filiform, subserrate within, the basal joint stout, the second short, the 

 terminal elongate, subcylindric, obliquely truncate at the apex, the interme- 

 diate of nearly equal length; in the female stouter, about half the length of 

 the body, thickened towards the apex, and the two basal joints robust, the 

 terminal ones large and cylindric. Palpi maxillary with the terminal joint 

 dilated, subcylindric : head deflexed, large, transverse, wider than the 

 thorax : eyes large, nearly approximating in front in the males, of the 

 females smaller and lateral : thorax subquadrate : body elongate : elytra 

 broader than the thorax, depressed, elongate: legs simple, rather long, 

 posterior_/e??2ora slightly incrassated ; ^aw with the antepenultimate joint 

 bilobed. 



Euglenes differs from Aderus by having the second joint alone of 

 the antennae abbreviated, and also by the antennae themselves being 

 dissimilar in the sexes ; the eyes, especially in the males, are very 



