STYLASTERIDAE (HYDROCORALS) FROM SOUTHERN SEAS 45 



indebted to the director of Institut Royal des Sciences Naturelles de Belgique, Dr V. van Straelen, for 

 the exact data concerning these localities : 



12. v. 1898, 71° 14' S, 89 14' W, depth 450 m. 

 18. v. 1898, 71 18' S, 88° 02' W, depth 450 m. 



27. v. 1898, 71 15' S, 87 39' W, depth 100 m. 



28. v. 1898, 71 19' S, 87 37' W, depth 435 m. 



These data are of great interest combined with the localities from the Discovery collections. 



Fig. 12. The localities of Errina antarctica. Earlier known localities, open rings. 



All localities with depths greater than 400 m. are situated south of the Antarctic Convergence; 

 in sub-antarctic waters, on the other hand, the species has as yet only been met with at depths above 

 200 m. It must be mentioned here that no depth record exists concerning the two older localities, 

 Cape Horn and Heard Island. 



A series of new localities has been added by the Discovery Expedition (see Fig. 12). Allowing for 

 the difficulties attendant on taking Stylasterids in the catches because of their special ecological demands, 



