236 BRITISH TYROGLYPHIDjE. 



never on the mole itself. G. sciurinus I have found 

 both in the nest and on the squirrel. Haller, who dis- 

 covered the adult, found it upon the squirrel itself in 

 some numbers. The species connected with the mice 

 have only been found in the hypopial stage, when they 

 are naturally found upon the mouse more than else- 

 where. 



I have preserved the name of Dermacarus in connec- 

 tion with the species having homopial nymphs, in case 

 the time should come when it may be desirable to 

 revive that genus. 



