Drillia.] GASTROPODA. 481 



Animal unknown. 



Type in the collection of Dr. H. Fischer, Paris (?). 



Hob. Bay of Islands (J. C. Anderson). Australia and Tasmania. 



9. Drillia laevis, Hutton, 1873. Plate 46, fig. 26. 



Pleurotoma loevis, Hutt., C.M.M., 12. Drillia laevis, Hutt., M.N.Z.M., 44 : 

 P.L.S. N.S.W., x, 117 : Plioc. M., 51, pi. 7, f. 32 : T.N.Z.I., xxxi, 66 ; 

 xxxviii, 283 : J. Mai., xii, 73. 



Shell claviform, solid, axially costate, with a pinkish spiral band. 

 Sculpture consisting of oblique rounded and strong axial ribs, beginning 

 at the angle of the shoulder, and extending to the suture below ; on 

 the body-whorl they are obsolete on the base ; their number is about 

 14 on a whorl ; the whole surface, and especially the interstices, are 

 very distinctly striated by fine flexuous growth-lines, crescent-shaped 

 on the smooth depression of the shoulder ; microscopic spiral lines 

 are sometimes visible on the shoulder, and, a little stouter, upon the 

 lower part of the base ; the lightly elevated fasciole very finely trans- 

 versely striated. Colour pale fulvous, usually with a broad spiral 

 band of pink on the centre of the whorls. Spire high, acuminate, 

 turreted, nearly twice the height of the aperture. Protoconch of 1J 

 smooth convex white whorls, the nucleus broadly rounded. Whorls 

 about 8, regularly increasing, a little concave at the narrow shoulder, 

 convex below it ; body-whorl flatly rounded below the angle, but 

 faintly contracted at the base. Suture distinct, not deep. Aperture 

 oblique, narrowly ovate, produced below into a short straight and 

 widely open canal, sinuated at the base. Outer lip convex, a little 

 contracted below, thickened inside, with a rather deep and narrow 

 sinus above, its margins thickly callous. Columella subvertical, drawn 

 out to a fine point below. Inner lip smooth, broad, and thick, extend- 

 ing over the parietal wall, which has a prominent tubercle margining 

 the sinus. Operculum unknown. 



Diameter, 7 mm. ; height, 18 mm. (type). Angle of spire, 30. 



Animal unknown. 



Type in the Dominion Museum, Wellington. 



Hob. Stewart Island (type) ; Port Pegasus, in 18 fathoms (Captain 

 Bollons) ; Foveaux Strait, in 15 fathoms ; near Cuvier Island, in 37 

 fathoms (Captain Bollons) ; off Great Barrier Island, in 110 fathoms ; 

 near Channel Island, Hauraki Gulf, in 25 fathoms. 



Fossil in the Pliocene. 



Subsp. parva, Suter, 1908. 



Drillia Icevis parva, Suter, P. Mai. S., viii, 1908, 185. 



Distinguished from the species by its much smaller size, the broader 

 shoulder, and the slender, short, oblique costae, sometimes reduced to 

 pointed tubercles on the last whorl, their number being 12 to 14 on the 

 last whorl. 



16 Moll. 



