119 



From N'ew Zealand — 



G. 9505. Two mutilated shells of a species of Scap\ella (?) 

 aff. 8. gracilis, imbedded in shelly argillaceous limestone. — 

 G. 9506. Two blocks of similar limestone with remains of 

 Scaphella (?). — G. 9508. Cast of a volutoid shell in limestone. 

 — All from the Lower Miocene of Akuakua, east coast of Auckland. 



Sir James Sector Coll. 



70414. Mutilated cast of shell having affinities with Scaphella 

 gracilis ; from the Tertiary of Mount Wellington. Purchased. 



Family MITEID^, 



Genus MITRA, Lamarck. 

 [Mem. Soc. Hist. Nat. Paris, 1V99, p. 70.] 



Shell thick, mitriform, solid ; aperture narrow, channelled 

 anteriorly ; columella obliquely plicated, the posterior plaits often 

 being larger than the anterior; lip commonly thickened, and 

 devoid of lirse or denticles within. 



Type. — Valuta episcopalis, Linnaeus. 



Mitra alokiza, Tenison-Woods. 



1880. Mitra aloHza, Tenison-Woods, Proc. Linn. Soc. N.S.W. vol. iv. p. 9, 



pi. ii. fig. 12. 

 1889. Mitra {Ewnitra) alokiza, Tate, Trans. Eoy. Soc. South Aust. vol. xi. 



pp. 135-6, pi. iv. fig. 8. 

 1893. Mitra alokiza, Tate and Dennant, id. vol. xvii. pt. 1, p. 220. 



Protoconch, according to Professor Tate, with two small, narrow, 

 rounded turns ; whorls ten in number, slightly convex, last whorl 

 subangulate medially ; sutures margined, the whorls being some- 

 what staged ; spiral grooves regular and distant, elegantly and 

 closely punctated, the antorior half of the body-whorl having 

 more numerous and closely-set grooves ; aperture narrow, 

 elongate, truncated anteriorly, outer border very thin for such 

 a solid shell ; columella with four plications, the most anterior 

 of which is much smaller than the others. 



This species closely approximates M. scrohiculata, Brocchi, from 



