242 GASTROPODA. [Pectinibranchia. 



reddish-brown. Spire elongated conic, little more than twice the 

 height of the aperture ; outlines slightly convex. Protoconch minute, 

 of 1 smooth and convex whorl. Whorls 8, first very slowly increasing, 

 flatly convex ; base nattish, oblique. Suture impressed. Aperture 

 oval, minutely channelled above, narrowly effuse below, but no distinct 

 canal, with a shallow notch. Outer lip sharp, thin. Columetta sub- 

 vertical. Inner Up very narrow, forming only a very thin glaze on 

 the body- whorl. Operculum normal. 



Diameter, 1-75 mm. ; height, 5mm. 



Animal unknown. 



Type in the Dominion Museum, Wellington. 



Hob. Stewart Island, in 30 fathoms (type) ; Hauraki Gulf. 



3. Bittium granarium, Kiener, 1842. Plate 39, fig. 14. 



Cerithium granarium, Kien., Icon. Coq. Viv., v, 1842, 72, pi. 19, f. 3. Bittium 

 granarium, Kien., Man. Conch. (1). ix, 155, pi. 30, f. 98; Pritchard 

 and Gatliff, P.R.S. Vic., xiii (n.s.), 153. Cerithium lacertinum, Gould, 

 P. Bost. S.N.H., vii, 18(31, 386; Conch. Icon., 1865, f. 129. B. gran- 

 arium, Kien. : Suter. P. Mai. S., viii, 34. 



Shell small, elongate, with granular whorls. Sculpture with axial 

 riblets, about 20 on the penultimate whorl, crossed and cut up into 

 numerous beads by spiral sculpture, 4 rows of beads on a whorl ; the 

 interspaces have sometimes a fine spiral thread, and one of them 

 is margining the suture above ; base with 5-6 subequidistant spiral 

 riblets, close together on the neck ; varices mostly indistinct. Colour 

 reddish-brown or dark, dead shells white ; sometimes the beads are 

 chestnut-coloured on a light ground. Spire high, subulate, about 

 three times the height of the aperture ; outlines slightly convex, 

 Protoconch minute. Whorls 12 to 13, first very slowly increasing, 

 flat ; base slightly concave around the neck. Suture impressed, mar- 

 gined. Aperture oblique, channelled above, produced into a very 

 short broad and open canal, which is oblique, sublateral, and notched 

 at the base. Outer lip thin and sharp. Columetta short, arcuate. 

 Inner lip rather narrow, limited by a narrow rim on the outside, spread- 

 ing as a thin callosity over the parietal wall to the outer lip. Oper- 

 cidum normal. 



Diameter, 5 mm. ; height. 17 mm. 



Animal unknown. 



Type (?). 



Hob. Hauraki Gulf (E. A. Annett). Australia and Tasmania. 



4. Bittium Lawleyanum, Crosse, 1863. Plate 14, fig. 13. 



Bittium Lawleyanum, Crosse, J. de Conch., 1863, 87, pi. i, t". 4 ; Man. Conch. 

 (1), ix, 154, pi. 30, f. 5 ; Tate and May, P.L.S. N.S.W., xxvi, 387 ; Prit- 

 chard and Gatliff, P.R.S. Vic. (n.s.), xiii, 154. 



Shell small, subulate, spirally grooved, thin. Sculpture con- 

 sisting of subequidistant spiral grooves, about 8 on the penultimate 

 \vhorl, sometimes with distant broad axial plications and numerous 



