BYRRHUS. 49 



in this species are longer than in others, and 

 rather perfoliated than merely knobbed. 



Byrrhus Museorum resembles Byrrhus Scro- 

 phularia?, but wants the red suture of the \v ing- 

 shells: it is often seen in houses, and commits 

 depredations in animal and vegetable collections, 

 in the same manner as the insects of the genus 

 Ptinus and Dermestes. 



v. vi. P. i. 



