ACARINA FROM THE JUAN FERNANDEZ ISLANDS 



6«5 



• Although I am inclined to believe that the establishing of a distinct genus 

 or subgenus for those Belaustium-XxVo. forms which have no nose at the anterior 

 end of the propodosoma, I think it is better to defer this until the extra- 

 european forms are better known than what is hitherto the case. • - ; 



This genus (or subgenus) would also include Erythrceus antarcticus TrA- 

 gArdh from Falkland Islands (1907. p. 25 — 26. figs. 48—52; which, as a matter 

 of fact, iis very closely related to B. <?(^//^j^«;«, but easily distinguished by the 

 different proportions of the joints of the legs. 





' ' Figs. 163 — 166. Belaustiuin obtusum n. sp. 



163. Outline of the body. 164. Propodosoma. 165. Maxillary palp, seen from the inner side. 



166. Tarsus I and top of tibia. 



Length 1080 {jl. width 720 {x, width of propodosoma 450 [i. 



Colour unknown owing to the discoloration due to the preserving fluid. 



Shape (fig. 163) broadly rounded, the greatest width being at the shoul- 

 ders, which are set off from the propodosoma by incisions; posterior margin 

 obtusely rounded. 



Texture finely transversally wrinkled or striated; the cuticle of the palps 

 and of the legs, which in B. antarcticum is more strongly chitinized and has 

 numerous pores, is in B. obtusum quite hyalin, without any pores. 



The hairs of the body are simple, setiform and slightly curved. 



Propodosoma (fig. 164) small, triangular, half as long as it is wide, an- 

 terior margin rounded, the sides with a small incision from which a transverse 



