M ///'. | GASTROPODA. 361 



defined on the outside, forming a very thin glaze upon the faintly 

 excavated parietal wall. 



Diameter, 9-5 mm. ; height. '1 1-5 mm. 



Animal unknown. 



Type in my collection. 



Hab. Mokohinau Islands (type) ; Bay of Islands (J. (. Anderson). 



Remark. In form and general proportions resembling M. pica. 

 Reeve, from Australia, but larger and differently coloured. 



2. Mitra carbonaria, Swainson. 1822. Plate 46, fig. HI. 



Mitra carbonaria, Swainson, Bli-h Cat. Append., 1822, 10; "Exotic 

 Conchology," 1841, 37: Medley, P.L.S. N.S.W., xxxiii, 1908, 461. 

 .)/. ntelaniaiid. Lamarck : Krister, Conch. Cab., 1841, 44, j>l. 8, f. 7, 8 : 

 Man. Couch. (1), iv, 127. pi. 37, t'. 118: Index. 73. not of Lamarck. 

 M. niynt, Chemnitz: Reeve, Conch. Icon., ii, 1844, pi. 5. f. 33; Sowerbv. 

 Thes. Conch., iv, 1874, (i, pi. 352, f. 4; Annas, P./.S., 18(57, 193: not 

 of Chemnitz. Volutomitra digna, A. Adams. P.Z.S., 1854 (1855), 135 : 

 Thes. Conch., iv, Mitra, 0, pi. 361, f. 115. 



Shell moderately large, fusiform, solid, dark brown, polished. 

 Sculpture consisting of unequal fiat cinguli with linear interstices, 

 reticulated by straight growth-lines ; the cinguli at the base are nar- 

 row, rounded, and distant. Colour dark olive-brown or dark chestnut. 

 Spire elevated, narrowly conic, a little higher than the aperture : 

 outlines straight or lightly convex. Protoconch broadly convex, 

 smooth. Whorl* about (5, regularly increasing, flattish, the last two- 

 thirds of the whole height ; base slightly contracted. Suture super- 

 ficial, uneven. Aperture high and narrow, angular above, truncated 

 and moderately notched at the base. Outer lip vertical, almost straight, 

 edge blunt, smooth and slightly thickened within. Columetta sub- 

 vertical, with 5 equidistant oblique plaits, decreasing in size from 

 above. Inner lip narrow, well limited, spreading over the slightly 

 excavated parietal wall. 



Diameter, 15 mm. ; height, 48 mm. (specimen, Bay of Islands). 



Animal unknown. 



Type in the Manchester Museum. 



Hab. Bay of Islands : East Cape ; Tauranga. Only worn and 

 empty shells have hitherto been found. The type is from Port Jack- 

 son, New .South Wales. 



3. Mitra Hedleyi, Murdoch. 1905. Plate 18, tig. 3. 



Vulpecula (Pusia) Hedleyi, Muni.. T.N.Z.I., xxxvii, 1904 (1905), 228, pi. 8, 

 f. 21. 



Shell very small, shortly fusiform, rather thin, lightly polished, 

 with minute ornamentation. Sculpture consisting of fine narrow 

 and somewhat unequal spiral lira 1 , the interspaces linear, more pro- 

 minent on the base ; crossed by numerous dense unequal and straight 

 axial plications, regularly spaced on the third whorl only, and more 

 distinct at the suture. Colour greyish-white or light brown, occasion- 



