ECHINIDAE 221 



St. WS 236. 6. vii. 28. 46° 50' S, 60° 40' W, 272-300 m. I specimen. 



St. WS 237. 7. vii. 28. 46° 00' S, 60° 05' W, 150-256 m. 15 specimens. 



St. WS239. 15. vii. 28. 51° 10' S, 62° 10' W, 196-193 m. i specimen. 



St. WS 243. 17. vii. 28. 51° 06' S, 64° 30' W, 144-141 m. Several specimens. 



St. WS 244. 18. vii. 28. 52° 00' S, 62° 40' W, 253-247 m. Several specimens. 



St. WS 248. 20. vii. 28. 52° 40' S, 58° 30' W, 210-242 m. i specimen. 



St. WS576. 17. iv. 31. 51° 35' S, 57° 50' W, 34-24 m. I specimen. 



St. WS583. 2. v. 31. 53° 39' S, 70° 54' W, 14-78 m. I specimen. 



St. WS755. 2i.ix. 31. 51° 39' S, 57° 39' W, 75 m. Several specimens. 



St. WS 764. 17. X. 31. 44° 38' S, 61° 58' W, 106-1 10 m. Several specimens. 



St. WS 782. 4. xii. 31. 50° 28' S, 58° 30' W, 141-146 m. 4 specimens. 



St. WS 795. 18. xii. 31. 46° 14' S, 60° 24' W, 157-161 m. 2 specimens. 



St. WS 799. 21. xii. 31. 48° 04' S, 62° 48' W, 141-137 m. i specimen. 



St. WS801. 22. xii. 31. 48° 26' S, 61° 28' W, 165 m. 3 specimens. 



St. WS 804. 6. i. 32. 50° 23' S, 62° 49' W, 150-143 m. 8 specimens. 



St. WS 825. 28. i. 32. 50° 50' S, 57° 15' W, 135-144 m. 3 specimens. 



St. WS S29. 31. i. 32. 50° 51' S, 63° 13' W, 155 m. I specimen. 



The question whether Notechiniis should be regarded simply as a synonym of 

 Pseudechinus, as is the opinion of Clark {op. cit., 1925), or whether it should be retained 

 as a genus distinct from Psetidechimis, I intend to discuss in Part III of my Monograph 

 of the Echinoidea. For the present, at least, I prefer to regard it as a separate genus, in 

 accordance with the opinion of Doderlein. 



Notechinus marionis, n.sp. 



(Plate II, figs. 5-10; Plate IX, figs. 1-4) 



St. 1562. 7. iv. 35. 46° 53' S, 37° 55' E, 97-104 m. Several specimens. 

 St. 1563. 7. iv. 35. 46° 48' S, 37° 49' E, 101-106 m. Several specimens. 

 St. 1564. 7. iv. 35. 46° 36' S, 38° 02' E, 108-113 m. 12 specimens. 



These stations are all off Marion Island. 



* Measured along the longest axis, Oc. I, Gen. 3. 



Largest specimens 27 mm. in diameter of test. The test is low, hemispherical, the 

 circumference circular or rounded pentagonal; it is only slightly sunken towards the 

 peristome. 



