440 GASTROPODA. [Pectinibratichia. 



Columella vertical, arcuate, with a distinct oblique fold below, bending 

 to the left. Inner lip narrow and very thin, smooth. Operculum un- 

 known. 



Diameter, 2-7 mm. ; height, 6-2 mm. 



Animal unknown. 



Type in my collection. 



Hob. Near the Bounty Islands, in 50 fathoms (Captain Bollons). 



4. Alcira sulcata, Hutton, 1873. Plate 20, fig. 1. 



Lachesis sulcata, Hutton, C.M.M., 12 ; J. de Conch., 1878, 17 ; M.N.Z.M., 

 45. Columbella Huttoni, Suter, Index, 72 ; Murdoch, T.N.Z.I.. xxxvii, 

 223, pi. 7, f. 12. 



Shell small, robust, broadly subulate, spirally distinctly ribbed, 

 light brown. Sculpture consisting of broad flatly rounded and pro- 

 minent spiral ribs, 4 to 5 on the penultimate and 12 to 14 on the last 

 whorl, they are subequal on the spire-whorls, minute and close together 

 on the neck of the canal ; the interstices are slightly narrower than the 

 ribs, and rather deep ; both are crossed by irregular growth-lines, 

 which give the shell a slightly roughish appearance. Colour ash-grey, 

 brown, or reddish-brown, sometimes variegated with white. Spire, 

 elevated conical, usually very little higher than the aperture with 

 canal ; outlines straight. Protoconch papillate, of 2 smooth convex 

 whorls, reddish-brown. Whorls 6, regularly increasing, flatly con- 

 vex ; base contracted above the neck of the canal. Suture impressed. 

 Aperture oval, somewhat channelled above, produced below into a 

 widely open oblique and short canal, its base lightly notched. Outer 

 Up convex, contracted below, crenated by spiral sculpture. Columella 

 somewhat arcuate, the spirals usually continued over the outer part 

 of it, with a deep-situated but mostly distinct oblique plait at the 

 base. Inner lip mostly inconspicuous. Operculum unknown. 



Diameter, 3-75 mm. ; height, 9 mm. (type). Diameter, 2-5 mm. ; 

 height, 6 mm. (specimen from Whangaroa). 



Animal unknown. 



Type in the Dominion Museum, Wellington. 



Hab. Stewart Island (type) ; Whangaroa Harbour (C. Traill). 



5. Alcira Suteri, Murdoch, 1905. Plate 20. fig. 2. 



Mitromorpha Suteri, Murcl., T.N.Z.I., xxxvii, 1904 (1905), 220, pi. 7, f. (i. 



Shell small, elongately oval, somewhat thin, with fine spiral and 

 usually somewhat obsolete longitudinal riblets. Sculpture : The pen- 

 ultimate whorl with 6 to 7 and the last with 16 to 20 spiral riblets, 

 7 or 8 of which are in front of the aperture ; they are slightly variable 

 in strength, some in breadth equal to the interspaces, others aiv nar- 

 rower ; also an occasional small thread here and there arises in the 



