20. ARACHNOIDEA. 



3. Acari 



by 

 IVAR TRÄGÄRDH. 



With 2 plates. 



Amongst the coUections brought home by Prof. Sjöstedt from the German 

 East-Africa there are some acari which he has kindly handed over to me to work out. 



It is scarcely necessary to point out that the collection, allthough it contains 

 18 species, 12 of which are new to science, is in no way exhaustive and only repre- 

 sents a small part of the acari which occur in that country. 



Only two subfamilies of the Trombidiidce, the more conspicuous, scarlet-coloured 

 Trombidnnce and Erythrceince seem to be well representated, numbering not less than 

 12 i. e. ^/s of the whole collection. 



Besides these there are a few stray specimens of Lcelaptmce and nymphse mi- 

 gratorise of TJropodince, found on rats and beetles. 



Fani TroinbidiidjB. 



Siibfam. Erythrceince. 

 Rliyncliolophiis Duo. 



Hliyiicholophns siciilifonnis Tgdh.' 



Meru-mountsiin, one specinien ; Kilimandjaro, one specimen: Kiboscho 19. 

 II. 1006. 



The species was described by the author in 1904 from the desert at Heluän, Cairo. 



^ Results of tlie Swedisli Zoological Exp to Egyjjt and the white Nile 1901. No. 20. Part I. p. 64 — 65. 



