?s DISCOVERY REPORTS 



Type locality. Orange Bay, Patagonia. 

 St. WS 773. North of Falkland Is., 47 28' S, 6o° 51' W, 31 Oct. 1931, 291 m. (one valve, length 975 mm., 

 height 9 mm., thickness 3 mm.). 

 Range. Patagonia (Rochebrune & Mabille); north of Falkland Is. ; Petermann I. (Lamy). 



Subgenus Felicia Rochebrune & Mabille, 1889 

 Type (monotypy) : Felicia joussemimi Rochebrune & Mabille 

 Limopsis (Felicia) jousseaumi (Rochebrune & Mabille). 



Felicia jousseaumi Rochebrune & Mabille, 1889, p. 116, pi. 7, fig. 9a, b. 

 Limopsis jousseaumi Dall, 1908, p. 394. 

 Limopsis jousseaumei Lamy, 1911a, p. 26. 

 Limopsis jousseaumei Thiele, 1912, p. 228. 



Type locality. Beagle Channel, Tierra del Fuego. 

 St. 600. West of Adelaide I., Bellingshausen sea, 67 09' S, 69 27' W, 17 Jan. 1931, 4 8 7-5 12 m - ( one livin g 

 example, 34 x 28 x 11 mm., exclusive of periostracum). 



Range. Beagle Channel, Tierra del Fuego (type); off Alexander Land, 297 m. (Lamy, 191 1); off 

 southern coast of Chile, 53 1' S in 369 fathoms (Dall, 1908). 



Lamy (191 1 a, p. 27) synonymized Limopsis grandis Smith (19076), with jousseaumi, but Thiele (191 2) 

 maintained them as distinct and figured the hinge characters of both. Dall (1908) did not recognize 

 Felicia, as the 'absence of a fossette', upon which supposed character the genus was founded, was 

 shown to be a misconception. However, these Antarctic, large, thin-shelled, deep-water Limopsids 

 would seem to be worth separating subgenerically on account of the relatively small, weakly developed 

 hinge and tiny fossette. Related species are: grandis Smith (19076), from Davis Sea, 254 fathoms; 

 marionensis Smith, 1885 from off Marion Island in 140 fathoms; laeviuscula Pelseneer, 1903 from 

 71 S, 89 W; and longipilosa Pelseneer (1903), from 71 22' S, 16 34' W in 1410 fathoms. 



Genus Lissarca Smith, 1877 

 Type (monotypy) : Area (Lissarca) rubrofusca Smith 

 Lissarca cf. notorcadensis Melvill & Standen 



Lissarca notorcadensis Melvill & Standen, 1907, p. 144, figs. 14, 14a. 

 Area (Bathyarca) gourdoni Lamy, 191 1 a, p. 28, pi. 1, figs. 21, 22. 

 Lissarca gourdoni Thiele, 1912, p. 228, pi. 18, fig. 3. 

 Lissarca notorcadensis Smith, 191 5, p. 75- 

 Lissarca notorcadensis Hedley, 1916, p. 19. 



Type localities. Scotia Bay, South Orkneys, 9-15 fathoms {notorcadensis); Alexander I., 250 m., 

 Bellingshausen Sea (gourdoni). 



St. WS838. Between Patagonia and Falkland Is., 53 n' 45" S, 65 W, 5 Feb. 1932, 148 m. (one living example). 



Range. Alexander I. (Lamy); South Orkneys (Melvill & Standen); Gauss Station (Thiele); 

 Commonwealth Bay, Adelie Land, 25-400 fathoms (Hedley); Ross Sea, 140-160 fathoms (Smith). 



The reference of the St. WS 838 specimen to the above species is not certain, for the single example 

 is not adult. 



