282 Transactions. 



10. Daphnella protensa, Hutton. Plate XXI, figs. 7, 8. 



Daphnella protensa, Hutton, Trans. N.Z. Inst., vol. xvii, p. 317, 

 1885 (from the Pliocene of Petane). 



Two specimens turned up, which differ from the type by the 

 predominating spiral sculpture and very feeble axial plications. 

 Typically there are delicate spiral threads, but in our specimens 

 there are distinct chords present, which are crossed by flexuous 

 longitudinal striae. Only the upper whorls are distinctly decus- 

 sate. The protoconch, consisting of two smooth whorls, is much 

 larger than in fossil specimens from Petane, more bulbose, and 

 with an oblique nucleus. 



This form may constitute a new subspecies, but the material 

 at our disposal is too scanty to decide this point with certainty. 

 A figure of this variety and of the protoconch are here given. 



11. Mangilia dictyota, Hutton. 



Clathurella dictyota, Hutton, Trans. N.Z. Inst., vol. xvii, p. 316. 

 1885 (from the Pliocene of Wanganui and Petane). 



Two dead shells which correspond with Hutton's diagnosis : 

 they have the same dimensions, but the anal sinus is more con- 

 spicuous and deeper. Usually recent specimens from shallow 

 water are slightly larger. 



12. Drillia buchanani, Hutton, subsp. maorum, E. A. Smith. 

 Surcula buchanani, subsp. maorum, Suter, Proc. Mai. Soc, 



vol. vi, No. 4, p. 200, 1905. 



A few fairly well preserved dead shells were dredged. They 

 are much smaller than the typical form, having a length of 

 12 mm. only, against 21 mm. Similar small examples were also 

 collected by Mr. A. Hamilton, Director of the Colonial Museum, 

 off Otago Heads. 



Harris suggested that P. buchanani should be classed with 

 Surcula, but its proper place seems to be under Drillia. 



13. Drillia, sp. 

 Of this form there are two small examples, but in so poor 

 a condition that we hesitate to describe them. The shells 

 apparently are not adult ; the sculpture approaching perhaps 

 nearest to the Pliocene fossil Pleurotoma gemmea, Murdoch.* 



* Trans. N.Z. Inst., vol. xxxii, p. -217. pL xx. fig. 9, 1900. 



