(dr. a. c. ottdemavs) a sarcoptes of a bat. 271 



lamella into pieces and in delivering the parisite from its narrow 

 prison. But at the same time nearly a hundred very little quite 

 white eggs came to light« 



Fig. 4. With a ten-times linear magnifying glass and on a black 

 underground the parasite appeared to be nearly circular, for the 

 greater part yellowish brown and with a very little head, or 

 what seemed to be a head, and with regularly arranged dark 

 brown figures. 



Fig. 5. Turned on its back, the underside or ventral side 

 appeared to be nearly flat, with lighter colours than on the dorsal 

 side, being here nearly as yellow as butter and having cocoa-brown 

 spots. 



Fig. 6 shows us that the animal is nearly half as high as its 

 body-length. Legs were apparently absent. The head is situated 

 higher than the ventral surface. 



I could not yet observe what animal it was , but from the shape 

 of the numerous eggs I supposed it might be a kind of Sarcoptes. 

 I examined the further contents of the empty prison and those of my 

 hollow glass cube in which I had prepared the animal in question, 

 I happily found three larvae which I immediately recognized as 

 larvae of a kind of Sarcoptes. 



I instantly wrote to Mr. Poppe that I had found in one of his 

 tubes pieces of a membrane, apparently originating from the 

 patagium of Vespertilio mur 'mus , with globular bodies, which 

 prooved to be footless Sarcoptides, and asked him whether he 

 might still remember from what locality these bodies originated. 

 Mr, Poppe kindly answered me that according to his memory he 

 had cut these bodies from the ears of the bat and that he has 

 often observed such bodies there. 



Fig. 7. Meanwhile I had made transparent by glycerine a full 

 grown Sarcoptes, which I have delineated, magnified 44 times in 

 fig. 7. The figure now distinctly shows four legs, two on both 

 sides of the head. The legs do remind those of Knemidocoptes 

 mutans Robin and K. fossor Ehlers. Somewhat behind the head 

 nearly two times its own length , two very little spots are visible, 



