MARINE MOLLUSCA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. i45 



Hal.— Scotia Bay, South Orkneys, 9-10 fathoms, April 1903. Station 325, 

 contiguous to first-mentioned locality, off weed, dredged August 1903. Likewise in 

 shore pools, Scotia Bay, December 1903. All seemingly typical. 



Sub-order mytilacea. 



Family Mytilidse. 



Mytilus edulis, L. 



Mytilus edulis, Linne, Syst. Nat., xii. ed., p. 1157 (1769). 



„ „ Forbes and Hanley, ii., p. 170, pi. xlviii., figs. 1-4. 



„ ,, Jeffreys, British Conchotomy, ii., p. 104 (1863). 



„ „ Smith, Phil. Trans. Boy. Soc. Lond., vol. clxviii., p. 189 (1879). 



Hab. — Hearnden Water. Falkland Islands, 1903. 



This abundant European species is fast becoming almost universal outside the actual 

 tropics. It was included by Mr E. A. Smith (vide the reference given above) as 

 occurring in Kerguelen Island, and it is also reported from New Zealand. 



Mytilus magellanicus, Chemnitz. 



Mytilus magellanicus, Chem., Conch. Cat., vol. viii., pi. lxxxiii., fig. 742. 

 ,, ,, Reeve, Conch. Icon., vol. x., pi. vi., fig. 22. 



Hab. — Port William and Port Stanley, 6 fathoms, January 1904; also on shore, 

 Cape Pembroke, Falkland Islands. 



Mytilus ovalis, Lamarck. 



Mytilus ovalis, Lam., Enc. Meth., pi. ccxix., fig. 3. 



„ „ Reeve, Conch. Icon., vol. x., pi. iv., sp. 14. 



Hab. — Hearnden Water, Falkland Islands, January 7, 1903. 



Philobrya meridionalis (Smith). 



Mytilus meridionalis, Smith, Beport, "Challenger" : Lamellibranchiata, vol. xiii., pp. 273, 

 274, pi. xvi., figs. 3, 3a. 



Hab. — Station 325. Dredged at 9-15 fathoms, Scotia Bay, South Orkneys, 

 May 1903. 



Originally described from a station between Kerguelen and Heard Islands, at 150 

 fathoms, and, at about the same depth, from Prince Edward Island. 



Philobrya quadrata (Pfeffer). 



Philippiella quadrata, Pfeffer; E. von Martens and G. Pfeffer, Mollusk. von Sud-Georgien, 

 1886, p. 119, Taf. iv., fig. 6 a-b. 



Hab. — Shore pools, Scotia Bay, South Orkneys. 



