LOUSE MITES. 325 



CASE the species of ear mites have been to me six-footed, very rarely 

 eight-footed have been met with." If they are the young of any 

 other bat parasite, with eight legs, we are at least not able to 

 indicate its probable parent. 



Otonyssus sticholasius {Kole7t., Sitz. Akad. Wissench. Wien, 1858, 

 p. 73. Acarus sp. Maddox in Monthly Microsc. Jour., 1871, p. 144). 



This species has been obtained by Kolenati from the pipistrel, 

 and it seems to be the same as the species seen and so well 

 •described by Dr. Maddox. One of Kolenati's specific characters 



Otonyssus sticholasius. Copied from Kolenat.. Ditto, copied from Maddox. 



of it is that his species has four transverse rows of four or five 

 bristles each on its back. In this it agrees with the species of 

 Dr. Maddox. They differ however slightly in colour, that of the 

 latter being brown while Kolenati's is deep cherry red, which 

 may probably be due to the difference in freshness or degree of 

 digestion of the contained food. 



On the pipistrel — Austria. Scotland. 



Kolenati describes five other species of Otonyssus from the ears 

 of different bats. 



Genus Peplonyssus {Kolen. Sitz. Akad. Wiss. Wien, 1858, p. 74). 

 This is a genus nearly allied to the preceding and which has 

 been styled the top shaped mites by Kolenati. He says that the 

 legs are eight-jointed, which we presume must be an error because 

 of its obvious affinity to the preceding, and from his description 

 of the legs and claws being the same as of its allies, but we have 



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