13° 



DISCOVERY REPORTS 



Family CYMATIIDAE 



Genus Fusitriton Cossman 1903 



Type (o.d.): Triton cancellatum Lamarck= Cyrotritonium Martens 1903, Type 



Lampresia murrayi Smith = Priene of Cossmann, 1906, non H. & A. Adams, 1858 



Fusitriton cancellatum (Lamarck) 



Murex magellanicits Chemnitz, 1788, p. 275, pi. 184, fig. 1570 (non binom.). 



Triton cancellatum Lamarck, 1822, p. 187. 



Triton cancellatum Lamarck, 1845, p. 638. 



Fusus cancellatus Reeve, 1848, pi. 16, fig. 62. 



Priene magellanica Rochbrune & Mabille, 1889, p. H 42. 



Triton cancellatus Strebel, 19056, p. 647, pi. 23, fig. $oa-e. 



Triton cancellatum (Gay) Hupe, 1854, p. 182. 



Triton cancellatus Tryon, 1881, p. 34, pi. 16, fig. 164. 



Type locality. Strait of Magellan. 



St. WS 71. 6 miles N 6o° E of Cape Pembroke Lt., East Falkland Is., 51° 38' 00" S, 57 32' 30" W, 23 Feb. 1927, 



82-80 m. 

 St. WS 80. Between Falkland Is. and Patagonia, 50 58' 00" S, 63° 39' 00" W to 50 55' 30" S, 63 36' 00" W, 



14 Mar. 1927, 152-156 m. 

 St. WS 83. 14 miles S 64 W of George I., East Falkland Is., 24 Mar. 1927, 137-129 m. 

 St. WS 85. 8 miles S 66° E of Lively I., East Falkland Is., 52 09' 00" S, 58 14' 00" W to 52° 08' 00" S, 



58 09' 00" W, 25 Mar. 1927, 79 m. 

 St. WS 109. North of Falkland Is., 50 19' 00" S, 58 27' 00" W to 50 18' 36" S, 58° 30' 00" W, 26 Apr. 1927, 



145 m. 

 St. WS 225 North-west of Falkland Is., 50 20' 00" S, 62 30' 00" W, 9 June 1928, 162-161 m. 

 St. WS 243. Between Falkland Is. and Patagonia, 51 06' 00" S, 64 30' 00" W, 17 July 1928, 144-141 m. 

 St. WS 250. North-east of Falkland Is., 51 45' 00" S, 57 00' 00" W, 20 July 1928, 251-313 m. 

 St. WS 756. North of Falkland Is., 50 53' S, 6o° 00' W, 10 Oct. 1931, 118-90 m. 

 St. WS 799. North-west of Falkland Is., 48 04' 15" S, 62 48' 07" W, 21 Dec. 1931, 141-137 m. 

 St. WS 804. North-west of Falkland Is., 50 23-5' S, 62 47' W, 6 Jan. 1931, 143-150 m. 

 St. WS 866. Between Falkland Is. and Patagonia, 50 36' S, 64 15' W to 50° 39-5' S, 64° 15' W, 29 Mar. 1932, 



137-144 m. (juvenile dead shells). 

 St. WS 867. Between Falkland Is. and Patagonia, 51 10' S, 64 15-5' W, 30 Mar. 1932, 150-147 m. (half-grown 



dead shells). 

 St. 222. St. Martin's Cove, Hermit I., Cape Horn, 23 Apr. 1927, 30-35 m. 



Range. Magellan and Falkland I. Watson (1886) recorded cancellatum from off Marion I., 46 48' S, 

 37° 49' 30" E, 69 fathoms. I have not seen this specimen, but it most likely represents a new species. 



The finding of numerous examples of this species from a range of stations around the Falkland Islands 

 is of interest, as the species has not hitherto been recorded from this locality. These new records are 

 probably due to the fact that the Discovery Committee's 'William Scoresby' used the otter-trawl 

 extensively in these waters, thus covering a far greater area and securing large, sparsely distributed, 

 species, which previously had only been obtained in small specimen dredges by the merest chance. 



The known distribution of the genus is now as follows (See Figs. A and B) : 



cancellatum (Lamarck 1822): Strait of Magellan; Tierra del Fuego; South Patagonia and Falkland 

 Islands to Patagonia in 30-251 m. ; 



scaber (King & Broderip, 1831) : Valparaiso, 7-45 fathoms to Bolivia (Tryon); 

 rudis (Broderip, 1833): Chile to Peru (Tryon, Rochebrune & Mabille, 1889); 

 oregonensis (Redfield, 1848): San Diego, California, Bering Sea and Japan; 



