538 INSECTA MADERENSIA. 



considerably developed and elongate; whereas in the X. pallescens the first is 

 large and robust, the second scarcely smaller, the thii'd narrower (and a little longer) 

 than either the second or the fourth, the fifth to the tenth decrease gradually in 

 Icno-th but increase in breadth, and the terminal one is stout and obliquely 

 truncated at its extremity. 



408. Xylophilus pallescens, WoU. (Tab. XIII. fig. 3.) 

 X. testaceus subtiliter puhescens et minutissime punctulatus, oculis solis nigris. 

 Long. Corp. lin. 1^. 



Habitat JMaderam, rarissime; semel tautuiu (a meipso iu doiiio quadam Fuiichalensi) Novembri 

 exeunte a.d. 18-17 repertus. 



X. elongate-ovate, very minutely pubescent, and entirely testaceous, — the eyes (which are large and 

 prominent) being alone black. Head most minutely (and almost imperceptibly) punctulated, 

 and broadest behind the eyes. Prothorax and elytra with the punctures rather more distinct : 

 the former short, transverse-subquadrate, though a little wider in front than behind ; the anterior 

 margin somewhat rounded and produced ; and the posterior angles obliquely truncated : the 

 latter rounded at the sides, being widest about the middle, — nevertheless broader at the base 

 than the prothora.v. Antenna and leffs concolorous with the rest of the surface ; the former 

 distinctly incrassated towards their apex. 



The only example of tliis insect which has come beneath my notice was captured 

 by myself, during the winter of 1847, crawling on the inner wall of a house in 

 Eunchal. It would appear to be a nocturnal species, my specimen having been 

 found late at night and in a very active state. 



Sectio xiil brachelytra. 



Fam. 55. SCYDM^NID-Sl. 



Genus 182. SCYDMiENUS. 



Latreille, Oen. Crust, et Ins. i. 232 (1806). 



Corpus minutum, ovatum : capite plerumque exserto subrotundato et interdum jiedunculato ; vculis 

 rotundatis : prothorace elytris angustiore, postice constricto : elytris ellipticis, abdomen totum 

 tegentibus : alis sat amplis. Antenna capite prothoraceque paulo longiores, apicem versus sensini 

 clavata', articulo priuio robusto, sccundo paulo longiorc graciliorc, tcrtio ad sext.wm vel .^cptimuui 

 leviter gracilioribus longitudine subsequalibus, reliquis clavam elongatam laxam pcrfoliatam baud 

 abruptam efficientibus (octavo interdum minusculo, ct ultimo plerumque ovato-acuminato). 

 Labrum transverso-subquadratum, antice integrum. Mandibula basi latjp, apice angustje 



