and little-lcnoicn Arctic Spiders. 283 



Lycosa grcenlandica. 



Lynosa grcenlandica, Tlior. CEfvers. af K. Vet.-Akad. Fork. 1872, No. 2, 



p. lo7. 

 Aranea saccata, O. Fabr. Fauna Groenl. p. 228. 



Immature examples of both sexes and one adult female of 

 this fine spider were received from Mr. E. Whjmper (bj 

 whom thej were taken in North Greenland) in 1872. 



It is nearly allied to L. ameniata, Clerck, but is larger and 

 more brightly and distinctly marked, and the genital aperture 

 is very different. From L. glacialis it may be easily dis- 

 tinguished, uot'only by the difference of the thoracic stripes 

 (noted above in the description of that species), but also by its 

 distinctly annulated legs. 



This spider does not appear to have been met with during 

 the late Arctic Expedition. 



Genus Tarentula, Sund. 

 Tarentula exasperans.^ sp. n. PI. VIII. fig. 7. 



Adult male, length 3| lines. 



The cephalothorax is oval, rounded behind, and gradually 

 narrowing to the fore extremity ; the lateral constrictions at 

 the caput are slight ; and the sides are of a gradually sloping 

 character, somewhat depressed towards the lower margins. It 

 is of a deep black-brown colour: the central longitudinal stripe is 

 broad and distinctly marked; it runs from the foremost of the 

 four large eyes quite through to the hinder extremity, towards 

 which it narrows gradually; the margins of this stripe dilate 

 in a curved form just behind the ocular area; the inner part 

 of this portion is marked with dark brown, the rest of the 

 stripe being of a reddish yellow colour, and the Avhole of it 

 clothed with short greyish-white hairs : the lateral stripes are 

 very indistinct, being chiefly marked by short greyish-white 

 hairs. 



The eyes are in the ordinary position ; the line formed by 

 the posterior pair is longer than that of the middle pair, but 

 not very greatly ; the foremost row is the shortest ; and the in- 

 terval between the two central eyes is greater than that between 

 each and the lateral eye next to it ; the four large eyes form 

 very nearly a square, its posterior side being the longest. 



The leys are tolerably long and strong ; those of the fourth 

 (or hinder) ])air are the longest, and those of the third pair the 

 shortest ; they are of a dark brown colour (the femoral joints 

 Ijcing of the deepest hue), and are furnished with hairs, bristles, 

 and spines : there are faint traces of annulation on the hinder 



