1 2 2 AI^A CHNOIDEA. 



CASE (two species), and in the third there is no line of separation on 

 the back between the thorax and abdomen (two species). In this 

 latter Koch includes Duges' Megamerus ovalis. Our arrange- 

 ment, however, will not admit it here, and we have made a new 

 genus for it elsewhere. It is exceedingly minute. 



Thorell describes a new species, P. insulanus, from Spitzbergen. 



Genus Scyphius {KocJi). 



This genus also reminds us of Megamerus by its elongated 

 narrow body. It is very minute, but not quite so much so as the 

 last genus. 



Scyphius diversicolor {Koch). 



Scyphius diversicolor. Copied from figure in Koch's Ubersicht. 



Found in damp moss, and under decaying leaves, &c. 



Genus Linopodes {Koch). 



Legs six-jointed ; anterior pair excessively long and slender. 



One hesitates whether to regard these long-legged mites as 

 the representatives of Phalangium among the spiders, or of the 

 exotic tribe Gonyleptes, which have legs more than a foot in 

 length, and scarcely thicker than a pin. The Linopodes are all 

 extremely minute. 



No. I. Linopodes longipes {Herm., Apt.).— 1. Magnified figure of ditto, copied 

 from Hermann's figure. 



