,;i' --TKIiKA NM\A EXPEDITION. 



I. At Station 4~2. dll' Rio ilr Janeiro, in 40 fathoms, twelve interesting new forms 

 \\riv obtained. This semis ,-i large proportion of the thirty-two species dredged at this 

 station. Inn this is .-in-minted for from the fact that comparatively little dredging has 

 hiiht-rio lirm done oif tin- l'>ra/ilian coast, and it certainly would offer a fauna well 

 \\ori h investigation. 



As is well known, a West Indian fades obtains along this coast, and in the present 

 collection nine of the thirty-two species recorded occur in the Antillean region. 



5. From Station :!('>, South Trinidad Island, in the South Atlantic, 700 miles east 

 of llrazil. onlv two species were obtained, one of which, Moil'mlnr'nt /</fi'i'<///*, is of 

 special interest as showing the extended geographical range of this well-known 

 European species. 



II. DESCRIPTIONS OF SPECIES. 



1. ANTARCTICA. 



LIST OF STATIONS. 



Station 11)4. Off Gates Land, 69 43' S., 163 24' E., 180-200 faths. 



220. Off Cape Adare, mouth of Robertson's Bay, 45-50 faths. 



294. Ross Sea, 71 25' S., 179 3' E., 158 faths. 



314. 5 miles N. of Inaccessible Island, McMurdo Sound, 222-241 faths. 



316. Off Glacier Tongue, about 8 miles N. of Hut Point, McMurdo Sound, 190-250 faths. 



,, 331. Off Cape Bird Peninsula, entrance to McMurdo Sound, 250 faths. 



33S. Mc.M uriln Sound, 77 D 13' S., 164 18' E., 207 faths. 



339. McMurdo Sound, 77 3 5' S., 164 17' E., 140 faths. 



340. Ross Sea, 76 3 56' S., 164" 12' E., 160 faths. 



348. Off Barne Glacier, McMurdo Sound, 200 faths. 



349. Off Butter Point, Western shore of McMurdo Sound, 80 faths. 



3r>.-). McMurdo Sound, 77 46' S., 166 8' E., 300 faths. 



356. Off Granite Harbour, entrance to McMurdo Sound, 50 faths. 



1. l.t j'lin coppingeri (Smith). 



T,-riiiru (Pillilium) voppiniin-i. Smith, Proc. Zool. Soc., 1881, p. 35, pi. IV, figs. 12, 12A. 

 I.i-jirtti (Pilidium) antarctiea, Smith, " Discovery " Lamellibranchiata, p. 12, pi. II, figs. 11, 



I IA (1907) ; Hedley, Brit, Aiitarct, Exped." 1907-9, Biol., vol. II, Mollusca, p. 3. 

 Lcpeta (PU i<l in in) i-nppi n fieri : Thiele, Deutsche Siidpolar-Exped., vol. XIII, p. 185. 



Stations -2-20. :UO. :)48. Depth 45-200 fathoms. 



In describing the single specimen obtained by the "Discovery" I noted that it was 

 "narrower than /,. coppingeri from the Straits of Magellan," and had "fewer 

 radiating lira-. I now find that the characters referred to are somewhat variable. 



2. Mctrgarites </''"'""'. n. sp. PI. I, fio-. l. 



Shell lurbinate, moderately umbilicated, thin, greenish-iridescent, finely spirally 

 lirate tliroiighout, the threads upon the base below the periphery finer than those 



