MADEIRAN COLEOPTERA, 167 
Genus 201. XYLOPHILUS. 
(Bonelli) Latreille, Fam. Nat. 383 (1825). 
478. Xylophilus pallescens. 
Xylophilus pallescens, Woll., Ins. Mad. 538. tab. xiii. f. 3 (1854). 
Inhabits Madeira proper ; occurring sparingly in the houses and 
gardens of Funchal. 
Sectio XITIT. BRACHELYTRA. 
Fam. 58. SCYDMAsNIDA, 
Genus 202. SCYDMANUS. 
Latreille, Gen. Crust. et Ins. 1. 232 (1806). 
479. Scydmenus Helferi. 
Scydmzenus Helferi, Schaum, Anal. Ent. (Dissert. inaug.) 7 (1841). 
, Lucas, Col. de U Algérie, 131 (1849). 
—— —, Woll., Ins. Mad. 539 (1854). 

Inhahits Madeira proper; occurring beneath stones, and at the 
roots of grass, principally at intermediate elevations. 
Fam. 59. PSELAPHIDA. 
Genus 203. EUPLECTUS. 
(Kirby) Leach, Zool. Miscell. (1817). 
The discovery of the genus Huplectus in Madeira, during the 
summer of 1855, has introduced a new family into our Fauna,—the 
Pselaphide; and it will be sufficient, here, to state that it may be at 
once known from the Scydmanide (to which it is closely allied) by 
the very abbreviated elytra and slender trimerous feet of the minute 
insects which constitute it. In less apparent details, the Pselaphide 
are creatures of a very anomalous structure, their remarkable palpi 
(the maxillary pair of which are greatly elongated, and composed of 
from one to four joints, and the labial of from one to two), generally 
single claws, and largely developed paraglosse, giving them a cha- 
racter peculiarly their own. They occur amongst moss, and beneath 
the bark of trees,—where they prey upon the minute Acari which 
abound in such positions, 

