132 CANAEIAN COLEOPTERA. 



or more obsolete. Its scutellum, also, is perhaps a little less trans- 

 verse ; and the last three joints of its antennfe are, if anything, a 

 trifle less incrassated. It is apparently very rare, the only specimen 

 which has come beneath my notice having been captured by myself 

 from under the bark of a feUed Spanish chestnut-tree at the Agua 

 Mansa in Teneriife. 



Genus 94. XENOSCELIS*. 

 WoUaston, Trans. Ent. Soc. Lond. (.3rd series) i. 151 (1862). 



225. Xenoscelis deplanata. 

 Pristoscelis deplanatus, WoU., he. at. 152. pi. 7. f. 3 (1862). 

 Habitat in Teneriffa, Palma et Hierro, sub cortice EujiJiorhiarum 

 laxo arido prsesertim latitans. 



This cuiious insect, so remarkable for the serrations along the inner 

 edge of its hinder male-tibiae, seems to be almost peculiar (so far as 

 observed hitherto) to the dead EiqjJwrbia-stems, — beneath the loose 

 outer fibre of which it resides. In such positions it was taken by 

 Mr. Gray, on the ascent to Valverde, on the eastern side of Hierro, 

 and by myself (more abundantly) in the lower part of the district of 

 El Golfo, on the western side of the same island. Subsequently I 

 found a single specimen (beneath the bark of a pine-tree) on the 

 mountains above S^ Cruz, in Palma ; and another below Taganana, 

 in Teneriffe. 



Genus 95. SILVANUS. 

 Latreille, Gen. Crust, et Ins. iii. 19 (1807). 



226. Silvanus dentatus. 



Corticaria dentata, Msh7n, Ent. Brit. i. 108 (1802). 

 Silvanus dentatus, Stcph., III. Brit. Ent. iii. 104 (1830). 



, Woll, Ins. Mad. 167 (1854). 



, Id., Cat. Mad. Col. 54 (1857). 



Habitat in domibus Lanzarotse, Teneriffae et Gomerae, certe intro- 

 ductus. ^ 



Only four Canarian specimens of this insect (which is undoubtedly 

 an importation into these islands, no less than it is at Madeira) have 

 as yet come beneath my notice. Two of them were taken by myself, 

 — one (dead) in a house in Lanzarote, and the other (Hkewise dead) in 

 a similar position at Ycod el Alto of Teneriffe ; and the remaining 

 two by Dr. Crotch in Gomera. 



* I have changed the title of this genus, from Pristoscelis, to Xenoscelis, inas- 

 much as I have lat«ly been informed by Mr. Paseoe that the former name was 

 preoccupied by Dr. Leconte. 



