NEW PARASITIC MITES. 



793 



easily overlooked. There are some rather thick spiniform setje 

 on the dorsal surface of the legs, those on the femora being 

 especially noticeable. 



S . Posterior end of dorsal shield narrowed and angular, being 

 almost pointed, but blunt instead of roiuided off" as in L. grami- 

 losus. Ventral ^ilate divided into two regions hj a transverse 

 line as in L. granulosus. There are five pairs of hairs on the 

 anterior j^firt of this plate and eighteen hairs on the posterior 



Text-figure 35. 



Lipont/ssusjfavns Kolenati, $. Ventral view. 

 a. Sternal plate of Liponyssws gramdnstis Kolenati, ? . 



part of it. Hairs on venter numerous and quite short, Peritreme 

 apparently somewhat longer than in the male of L, granulosus, 

 almost reaching the middle of the first coxa. Fourth leg not 

 specially enlarged. 



Length of body (not including capitulum), $ -65 mm. ; S 

 •54 mm 



Host : Bats. The above description is based on Kolenati's 

 types in our collection labelled Derinanissus Jiavus There are 

 also specimens from a Noctule bat, Aylesford, Kent (27. x. 1919), 

 collected by the author. 



53* 



