282 Eev. 0. P. Cambridge on some new 



both sexes of this spider were received in 1870 and 1872 from 

 Mr. E. Whymper, bj whom they were found in various locali- 

 ties in North Greenland. Three examples, much shrivelled 

 and damagedj were contained among the Arctic-Expedition 

 Arachnids found by Capt. Feilden ; but 1 believe them to be of 

 this species: these were labelled "Hayes Sound, N. lat. 79°;" 

 and two examples, one of each sex, were among those found 

 by Dr. Hart in Discovery Bay. In the mipublished descrip- 

 tions of N. -Greenland spiders, before referred to, this spider is 

 recorded as Lycosa sejjtentrionalisj Westr. ; and L. saccata^ 

 O. Fabr. Fauna Groenl. no. 208, is placed among its synonyms. 

 I am, however, now convinced that these determinations are 

 erroneous (see the next species here recorded) . 



The adult male, which was unknown to Dr. Thorell, resem- 

 bles the female in general colours and characters ; but the fe- 

 mora and tibise of the legs ?ire more or less suffused and marked 

 with dark brown. The palpi are strong, their colour is like 

 that of the legs ; the digital joint is large and equals in length 

 that of the radial and cubital joints together, its colour is black- 

 brown, and (together with the radial joint) it is pretty thickly 

 clothed with hairs. The palpal organs are well developed ; 

 their hinder half consists of a strong, roundish, prominent, 

 corneous lobe, surmounted by a strong, pointed, spiny process 

 with a somewhat angular point at the middle of its fore 

 margin : the point of this process is directed outwards; and in 

 front of it, near the outer margin of the digital joint, are two 

 other smaller spines, close together ; one of these is strongly 

 hooked or reaphook-shaped, the other is a small, simple, slightly 

 curved, pointed spine ; on the outer side of these is the promi- 

 nent curved termination of a strong process which has its 

 origin on the inner side of the joint. There is no claw at the 

 extremity of the digital joint. 



Both sexes of this spider may be at once recognized by the 

 bifid termination of the ordinary central yellow stripe at the 

 tlioracic junction of the cephalothorax. This stripe has 

 generally the form of a barbed arrow-head with its point 

 directed backwards. The next spider, hoAvever {Lycosa rp-oen- 

 landica, Thor.), lias also a shortened central thoracic stripe, 

 but it is less distinctly bifid than in the present species, in 

 which the two limbs of this portion are considerably divergent. 

 In L. groenlandica also the lateral stripes on the cephalothorax 

 are broken up into several distinctly separated markings of 

 different sizes, while in L. glacialis they are continuous. 



