292 Transactions. 



and as M . marimus turned up alive from 30 fathoms near Channel 

 Island, as will be recorded in another paper, there seems to be 

 no reason to doubt the identity of the species. In the specimen 

 from Channel Island, part of the protoconch is preserved, and it 

 is very much like these specimens from 110 fathoms. On the 

 whorl succeeding the protoconch there are ten nodules ; the 

 canal is very long, narrow, and bent to the right. As most adult 

 specimens are, as it seems, more or less decollate, we give here 

 a sketch of the more perfect protoconch. It is pupoid, poly- 

 gyrate, consisting of four convex whorls with spiral riblets, 

 crossed by incremental lines ; nucleus central, small, slightly 

 raised. Most of the outer layer has peeled off, and only traces 

 of the sculpture are left. 



31. Siphonalia nodosa, Marty n. 

 Univ. Conch., Buccinum, vol. i, fig. 5, 1784. 



A fair number of dead young shells, all very fragile. 



32. Columbella choava, Reeve. 



Conch. Icon., spec. 239, 1858. 



One dead specimen, greyish- white, which is smaller and more 

 slender than typical examples, but otherwise there is nothing 

 to separate it from Reeve's species. Altitude, 3 - 8 mm. ; dia- 

 meter, 1*6 mm. 



33. Turritella pagoda, Reeve. 



Conch. Icon., spec. 60, 1849. 



A few dead young and imperfect specimens, which agree 

 with examples from the Wanganui Pliocene. 



34. Turritella fulminata, Hutton. 

 Cat. Mar. Moll. N.Z., p. 29, 1873. 



A few young dead shells, which have lost the characteristic 

 colour-markings. 



35. Turritella carlottae, Watson. 



Journ. Linn. Soc. Lond., vol. xv, p. 222, 1880 ( — vittata, Hutt., 

 non Lamk.). 

 One partly broken shell only. 



36. Diala subcarinata, n. sp. Plate XXIV, fig. 29. 

 Shell minute, subulate, smooth, narrowly perforate. Sculp- 

 ture : The longitudinals consist of minute growth-stria\ with 

 here and there irregular marks of growth-periods, subcostate 

 in places. Colour porcellaneous-white. Spire high, slender, 



