42 SUBANTARCTIC ISLANDS OF NEW ZEALAND. [MoUusca. 



Dentalium huttoni, T. W. Kirk, 1880. 



Dentdium hiUtoni, T. W. Kirk, T.N.Z.I., xii, 1879 (1880), p. 306. 



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



In deep water on the coasts of New Zealand. 



The type specimens were found in the stomach of a trumpeter. 



Genus Cadulus, Philippi, 1844. 

 Distribution. — Mediterranean, Atlantic, and Pacific ; mostly in deep water. 



Cadulus spretus, Tate and May, 1900. 



Cadulus spretus, Tate and May, T.R.S. S. Aust., xxiv, 1900, p. 102 ; P.L.S. N.S. 

 Wales, 1901, p. 420, pi. xxv, fig. 52. 



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

 Also Dusky Sound, 5 fathoms ; Queen Charlotte Sound, 16 fathoms ; near 

 Cuvier Island, 38 fathoms ; Tasmania. 



Earn. ANOMIIDAE, Adams. 

 Genus Anomia, Miiller, 1776. 



Distribution. — In most seas in the laminarian and coralline zone. 



Some valves of a small white and fragile species were obtained in 50 fathoms 

 near the Bounty Islands and north of Enderby Island, but not in sufficiently good 

 condition for description. They most likely represent a new species. 



Fam. ARCIDAE, Gray. 



Genus Arca, Lamarck, 1799. 



Distribution. — World-wide, the maximum in tropical seas. Some species are 

 abysmal. 



Arca (Lissarca) aucklandica, E. A. Smith, 1902. 



Lissarca aucklandica, E. A. Smith, Voy. South. Cross, 1902, p. 212, pi. xxiv, figs. 14, 15. 



Shell small, equivalve, very inequilateral, convex, purplish-red ; growth-lines 

 fine and dense, sublamellar posteriorly, with faint fine postmedian radiate striae. 

 Beaks not very prominent, approximate, but not quite contiguous. Teeth in each 

 valve about 5. Valves having the margins strongly denticulate inside, except on 

 the anterior ventral and the posterior median lateral parts. 



Length, 4^ mm. ; diameter, 2\ mm. ; altitude, 3^ mm. 



Hah. — Auckland Islands, in 10 fathoms. 



Allied to Lissarca rvbra-fusca, E. A. Smith, from Kerguelen Island. 



