The Acari of the Swedish South Polar Expedition. 



By 

 IVAR TRAGÂRDH 



Uppsala. 

 With 3 Plates and 56 Text-Figures. 



Although a considerable part of the collections of Acari made by this expedi- 

 tion were lost through the shipwreck of the »Antarctic» still fortunately the most 

 valuable part of them — from a zoogeographical point of view — viz. the collections 

 made in the true Antarctic region, were safely brought home. They prove to be by 

 far the most exhaustive collections yet made in those regions, numbering not less than 

 21 species, of which most are new to science. Unfortunately several of the new 

 species are only represented by a single specimen, and these are not even fuUgrown, 

 a fact which has, in some instances, rendered it impossible to identify the genera 

 with absolute certainty. 



Professor E. TrouessART of Paris and Mr. A. D. MICHAEL of Dorset, England, 

 have very kindly sent me the type specimens of some of the antarctic and 

 subantarctic Acari described by them and have thus enabled me to identify these with 

 absolute certainty, and I beg to tender them my best thanks for their kindness. 



The collections were made in 17 different localities, distributed as follows. 



Antarctic Region. 



1. South-Shetland Islands. Nelson Island, under stones, in a pool. nth. Jan., 1902. 



2. !■ in mossturf. nth. Jan. 1902. 



3. On a penguin-islet in Orléans Strait (Gerlache Channel), amongst lichens under 



stones. 1 2th. Jan., 1902. 



4. Cape Roquemaurel, on the N\V coast of Graham Land, in damp sand. 14th. 



Jan., 1902. 



5. Paulet Island, in wet moss. 15th. Jan., 1902. 



6. On an islet in Orléans Strait, in a nest of Phalacrocorax atriceps. 



'°^' 07 Sch'vcdhche Siidpolar-Expediiicn igoi — igos- ' 



