- 4 5 - 



T. vidua n. sp. — The essential characters have 

 been pointed out in the key (Fig. 16). The species has been 

 mixed up with T. macrura, but it is considerably smaller, 



Fig. i 6. 7 hysanoëssa vicina n. sp. A. Inner and median 

 lobe of left copulatory organ of a specimen from the 

 Swedish Antarctic Expedition. p { . spine-shaped process; 

 p 2 . terminal process; p 3 . proximal process; p''. lateral 

 process. B. End of inner lobe with its three processes 

 of an organ from a specimen taken by the « Discovery» 

 (see the text). 



measuring at most 17 mm., and frequently about 1 2- 1 3 mm. 

 — I have seen a large number from the antarctic area explo- 

 red by Dr. O. Nordenskjöld and from lat. 6i°i3 1/2' S., 

 long. 173° 33 1 E. «Discovery». 



T. macrura G. O. S. — As to the essential characters 

 see the key and Fig. 17. The specimens to hand, however, 

 show various interesting features and differences arising 

 from age and individual variation, but an account must be 

 postponed to the report on the Sw r edish Antarctic Expe- 

 dition. — The largest female seen by me is 28.5 mm., 

 the adult males to hand are much smaller, only about 

 18-19 mm - 



Of this antarctic species a moderate number was taken 

 by the Swedish Expedition. Sars 1 type is from ((Antarctic 

 Ocean, near ice-barrier, Febr. 14, 1874»; it may be added 

 that I have separated T. vicina from T. macrura some 

 years after Ï had looked through the « Challenger » mate- 

 rial in the British Museum, but Sars 1 figures of his evident- 

 ly quite young specimens agrees on the w T hole better with 



(210) 



