SYSTEMATIC H3 



Dentition. Fig. L, 79, p. 194. The central tooth has three strong equally developed cusps and a 

 deeply excavated base. Laterals with a tall slender incurved outer cusp and a shorter truncated, heavy 

 inner cusp, plus a small narrow middle cusp situated close alongside the inner cusp. 



Operculum. Typical, horny, narrowly ovate, with apical nucleus and thickened margining ridge 

 along the upper part of the outer edge. In the other species of the genus this margining ridge extends 

 along the entire outer margin. Aperture i-6 times height of operculum (Strebel, 1908, pi. 3, fig. 426). 



Range. South Georgia, 75-728 m. 



The following two species complete the known members of the genus. 



Pfefferia palliata Strebel 



Pfefferia palliata Strebel, 1908, p. 34, pi. 3, fig. 39a-/. 

 Pfefferia palliata Thiele, 1912, pi. 16, fig. 20 (radula). 



Type locality. South Georgia, 54 17' S, 36 28' W, 75 m. 



Pfefferia chordata Strebel 



1908. Pfefferia chordata Strebel, Schwed. Sudpol. Exped. vi (1), pi. 3, fig. ^.la-r. 

 Type locality. Cumberland Bay, South Georgia, 252-310 m. 



Genus Neobuccinum Smith, 1877 

 Type (monotypy) : Neobuccinum eatoni Smith 

 Neobuccinum eatoni (Smith) 



Buccinopsis eatoni Smith, 1875, p. 68. 



Neobuccinum eatoni Smith, 1879, p. 169, pi. 9, figs. 1, la. 



Neobuccinum eatoni Studer, 1879, p. 129. 



Neobuccinum eatoni Watson, 1886, p. 216. 



Neobuccinum eatoni Smith, 1902, p. 202. 



Neobuccinum eatoni Thiele, 1903, p. 168, pi. 9, fig. 57. 



Neobuccinum eatoni Lamy, 19066, p. 2. 



Neobuccinum eatoni Smith, 1907 a, p. 1. 



Neobuccinum eatoni Melvill & Standen, 1907, p. 139. 



Neobuccinum praeclarum Strebel, 1908, p. 31, pi. 3, fig. 38. 



Neobuccinum eatoni Lamy, 19106, p. 199. 



Neobuccinum eatoni Lamy, 1911a, p. 5. 



Neobuccinum eatoni Hedley, 191 1, p. 6, pi. 1, figs, n, 12. 



Neobuccinum eytoni Thiele, 191 2, p. 211. 



Neobuccinum eatoni Smith, 1915, p. 72. 



Neobuccinum eatoni Lamy, 191 5, p. 69. 



Neobuccinum eatoni Hedley, 1916, p. 59, pi. 9, fig. 97. 



Neobuccinum eatoni Eales, 1923, p. 28. 

 Type localities. 3-7 fathoms Royal Sound, Kerguelen I. (eatoni); Graham Land, 64 3' S, 

 56 37' W, 360 m. (praeclarum). 



St. 363. 2-5 miles S 8o° E of south-east point of Zavodovski I., South Sandwich Is., 26 Feb. 1930, 329-278 m. 



St. 1644. Bay of Whales, 78° 248' S, 164 10-3' W, 16 Jan. 1936, 626 m. 



St. 1952. Between Penguin I. and Lion's Rump, King George I., South Shetlands, 11 Jan. 1937-383 m - 

 Range. Graham Land (Strebel) ; South Orkneys (Melvill & Standen); South Shetlands (Lamy) ; 

 McMurdo Sound and Commonwealth Bay (Hedley) ; Ross Sea (Smith) and Kerguelen Island (Smith). 

 Hedley (1916, loc. cit. p. 59) was apparently quite correct in placing praeclarum in the synonym of 



eatoni. I cannot find any valid points of difference in this variable species. 



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