GAMASIDS, 



173 



CASE nyssus, Steatonyssus, and Pimelonyssus : — some of these are 

 smooth, some heavy, others rough, and some with shields on 

 the back and under side similar to those on the Pteroptidse, 

 to which these species have perhaps as much affinity as to the 

 Dermanyssi, and Kolenati has made use of these differences to 

 characterise his genera. We shall not follow him into these 

 species. It may be a sufficient indication of their character 

 to quote the names of the groups into which he divides them. 

 He calls the whole group of Dermanyssi skin mites, and these he 

 divides into the fat mites, the dirty mites, the big mites, the rough 

 mites, the broken-shield mites, and the jointed-shield mites. 

 We merely figure three of the principal types of these genera to 

 give the reader an idea of them, but not having seen them or any 

 carefully enlarged figures of their parts, we would refer the reader 

 who wishes further information about them to Kolenati's own 

 works. From Kolenati's figures and descriptions they seem to us 

 (at least those with shields) to form a tribe apart midway between 

 the Dermanyssi and the Pteroptidas. 



LiPCNYSSUS SETOSus {Kolcu. Sitz. Acad. Wiss. Wien. 1859, p. 172.) 



Liponyssus setosus. Copied from Kolenati. 

 ©•0012 of a Paribian metre in length. 



Macronyssus lontcimanus. 

 o'oooj to o"GOii ot a Parisian metre in length 



From the Rhinolophus euryale in Ban at and Servia. 



Macronyssus longimanus {Kolen.^ loc. cit. 178). 

 On Xantharpyia segyptiaca in Egypt. 



