CUCUJID/E. 



135 



Genus 120. SILVANUS. 

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



386. Silvanus surinamensis. 



Dermestes surinamensis, Linn.) Syst. Nat. i. 2. 565 (1767). 

 Anobium frumentarium, Fab., Mant. Ins. i. 39 (1787). 

 Dermestes 6-dentatus, Fab., Ent. Syst. i. 232 (1792). 

 Silvanus Surinamensis, Woll., Ins. Mad. 167 (1.854). 



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

 , Id., Cat. Can. Col 133 (1864). 



Habitat Maderenses (Mad.) et Canarienses (in Ten. et Gom. solis 

 haud observatus), certe introductus ; in domibus, granariis et 

 praesertim sub recremento farris ad basin acervorum tritici 

 sparse, hinc inde vulgaris. 



An almost cosmopolitan insect, which has been naturalized in 

 Madeira proper through the medium of commerce, as well as at the 

 Canaries. In the latter Group indeed we may- be quite certain that 

 it is universal ; for although I am not aware that it happens to have 

 been observed in either Teneriffe or Gomera, there can be no doubt 

 whatsoever that it must exist in both of them (as it does in the 

 other five islands of the archipelago). It occurs about houses and 

 granaries, and frequently teems beneath the refuse at the base of 

 corn-stacks. 



387. Silvanus unidentatus. 



Ips unidentata, Oliv., Ent. ii. 18. 12, pi. 1. f. 4 (1790). 

 Dermestes unidentatus, Fab.) Ent. Syst. i. 232 (1792). 

 Silvanus unidentatus, Erich.) Nat. der Ins. Deutsch. iii. 338 (1846). 

 , WoU.) Cat. Mad. Col. 53 (1857). 



Habitat Maderenses (Mad.), in castanetis editioribus supra urbem 

 Funchalensem sub cortice laxo parce occurrens. 



This European Silvanus occurs sparingly in Madeira proper, where 

 it was detected by the late Mr. Bewicke beneath the bark of Spanish 

 chestnut-trees on the mountains above Funchal. It is not unlikely 

 that it may have become accidentally naturalized there from more 

 northern latitudes. 



388. Silvanus nubigena. 



Silvanus nubigena, Woll, Ann. Nat. Hist. xi. 217 (1863). 

 Id., Cat. Can. Col. 133 (1864). 



Habitat Canarienses (Ten.), inter lapillos ramulosque emortuos sub 

 arbusculis Spartii nubigence humi jacentes, usque ad 9000' s. m. 

 ascendens. Yelocissime currit. 



