NEW PARASITIC MITKS. 78'J 



usuxl ueck-like portiou connecting with the anal part of the plate; 

 the transverse line present on this plate in L. flavus and 

 L. granulosus is absent in this species. There are nine- pairs of 

 hairs on the ventral plate and also the usual unpaired posterior 

 hair. Besides these hairs on the plate itself there are a few 

 lateral hairs posteriorly on the venter and they are fairly long. 

 The curved anterior seta on the inner side of the third coxa is 

 rather stout, being almost spiniform ; this coxa lias also a very 

 slender outer posterior spur, fourth coxa also usually with a 

 very slender posterior spur. First leg more slender than the 

 others, the second and third being short and stout ; the fourth 

 leg is enlarged as in L. carnlfex C. L. Koch, some of the spines 

 on this limb being rather stout, especially in the specimens from 

 the Prairie Marmot. Second tarsus with a pair of distal spinules 

 ventrally which are very stout and quite short. 



Length. $ (without capitulum) -TS-TS mm. ; J "SS-'eS mm. 

 Host : Alpine Marmot. The above description is based on a 

 number of female specimens mounted on a slide (one of Professor 

 Blanchard's preparations in the collection of tlie Paris Faculty 

 of Medicine). Also examples of l)oth sexes taken on marmots at 

 Zermatt {M. Biner) ; ex N. 0. Rothschild's coll. Also examples 

 of both sexes from specimens of the Prairie Marmot {Gynomys 

 ludomcianus) bred by Sir E. Loder at Leonardslee, Horsham, 

 England. 



LiPONYSSUS CONFUCIANUS, uom. nov. 



Liponyssus berlesei Hirst, Proc. Zool. Soc. 1921, jJ. 362. 



Canestrini has already described a species of Lelognathus — 

 Liponyssios from a bat under the name L. berlesei (Atti Soc. Ven. 

 Trent, xi. pp. 142-143, 1888), so it is necessary to find a new 

 name for my species from Myospalax scansus. 1 propose the 

 name L. confucianas for this species. 



Liponyssus macedonicus, sp. n. (Text-figs. 32, 33.) 



5 . Differing from L. scmrinios etc. principally in the shape 

 of the dorsal shield, which is rather abruptly narrowed at the 

 posterior end so as to practically form a short tail. Hairs on 

 dorsal shield exceedingly minute, a few near the anterior end on 

 the margins being a little longer and the terminal pair at the 

 posterior end of the shield also a little longer than the rest, but 

 still quite short. Hairs on uncovered part of body also sliort, 

 but two pairs at the posterior end (one of them venti-al) are 

 somewhat longer than the others. >S'te mal 2)late tri\-pezoid-<\\ and 

 not short, the posterior margin straight ; the three pairs of hairs 

 on this plate ai-e rather short. Genito-ventral jy^afe short and 

 fairly wide, its posterior end rounded oft'. Hairs on venter a 

 little longer than those on the dorsum. Anal plate rather 

 elongate pyriform. Peritreme reaching almost as far forwards 

 as the anterior margin of the first coxa. Second coxa with the 



