Mollusca.] SUBANTARCTIC ISLANDS OF NEW ZEALAND. 



43 



Fam. PHILOBRYIDAE, Bernard. 



Genus Philobrya, P. Carpenter, 1872. 

 Distribution. — Cosmopolitan. 

 Animal carnivorous. 



Philobrya costata (Bernard), 1896. 

 Hochstetteria costata, Bernard, Bull. d. Nat. du Mus., 1896. Philobrya costata, Bernard 

 J. de Conch., xlv, 1897, p. 15, pi. i, fig. 5 ; p. 33, fig. 7 in text. 

 Shell very small, thick, convex, very inequilateral, outlines subquadrangular. 

 Prodissoconch very prominent. Ligament internal. Teeth oblique behind, short 

 in front. Surface with strong serrate radial ribs, about 9-10. 



Diameter ant.-post., 2-5 mm. ; diameter dorso-ventral, 3-2 mm. Diameter, 

 2-2 mm. 



^a6.— Ten miles north of Enderby Island, in 85 fathoms (E. R. Waite). 

 Also along the coasts of New Zealand, from the littoral to the coralUne zone. 

 The Pliocene P. trigonopsis, Hutton, is nearly allied. 



Fam. MYTILIDAE, d'Orbigny. 

 Genus Mytilus, Linne, 1758. 



Distribution. — World-wide, the maximum of the species in the Arctic and Ant- 

 arctic Seas. 



Mytilus edulis, Linne, 1758. 

 Mytilus edulis, Linne, Syst. Nat., ed. 10, 1758, p. 705. 



HcA. — Auckland and Campbell Islands. 



Throughout New Zealand, Kerguelen, Patagonia, and Falkland Islands ; 

 abundant in European seas. 



Mytilus magellanicus, Lamarck, 1836. 



Mytilus trutgellanicus, Lamarck, A.s.V., ed. 2, vii, 1836, p. 37. M. polydontes, Quoy 

 and Gaimard : Gray in Dieff. N.Z., ii, p. 259 (non Quoy and Gaimard). 

 M. crenntus, Lamarck : Krauss, Siidafrik. Moll., 1848, p. 24 (non Lamarck). 

 M.capensis, Dunker: Menke, Zeitschr. f. Malak., 1846, p. 108. 



Hab. — Auckland Islands ; Campbell Island (Professor Chilton). 

 North and South Islands of New Zealand, Chatham Islands, and Fiji. 

 The species is circumaustral. 



Genus Modiolus, Lamarck, 1799. 

 Distribution. — World-wide. 



Modiolus australis, Gray, 1827. 



Modiola australis. Gray, App. King's Voy., ii, 1827, p. 477. Mytilus (Modiola) 

 areolatus, Gould, P. Bost. S.N.H., iii, 1850, p. 343 ; U.S. Expl. Exp., xii, 

 p. 452, atlas fig. 562. Modiola alhicostata, Lamarck : Hutton, C.M.M., 

 p. 78 (non Lamarck). 



