378 GASTROPODA. [Pectinibranchia. 



threads between them ; sometimes these ridges can hardly be dis- 

 tinguished on the spire-whorls from the prevalent fine striation, but 

 on the base they are gradually becoming very distinct, their number 

 being about 6 below the suture ; three to five whorls below the proto- 

 conch are distinctly axially costate, the costse straight, broadly rounded, 

 continuous over the whorls ; growth-lines fine and dense, slightly 

 reticulating the spiral threadlets. Colour yellowish-brown, no colour- 

 markings of any kind. Spire narrowly conical, higher than the aper- 

 ture with canal ; outlines lightly convex. Protoconch minute, papil- 

 late, of 1 smooth and 1 costate whorl, brown. Whorls 1 to 8, first 

 slowly increasing, the last high, slightly depressed below the suture, 

 thence flatly convex ; base contracted, concave. Suture lightly im- 

 pressed. Aperture subvertical, oval, subchannelled above, produced 

 below into an oblique, rather short, slightly recurved, and widely 

 open canal ; the base notched. Outer lip thin and sharp, mostly 

 smooth or only indistinctly lirate inside. Columella vertical, very 

 little arcuate, basal tubercles obsolete. Inner lip thin and rather 

 narrowly spread over the columella, extending as a very thin layer 

 over the parietal wall, which has only a very inconspicuous plait 

 below the suture ; lip narrowed below. Fasciole distinct, lamellate. 

 Operculum oval, horny, nucleus apical. 



Diameter, 7-5 mm. ; height, 18 mm. (type). Angle of spire, 36. 



Animal unknown. 



Type in the Dominion Museum, Wellington. 



Hob. Near Wellington (T. W. Kirk). 



Remark. A very local and distinct species. 



.">. Euthria Strebeli, Suter, 1908. Plate 18, fig. 10. 



Eufhria Strebeli, Suter, T.N.Z.I., xl, 1907 (1908), 369, pi. 30, f. 4. E. ant- 

 arctica, Reeve : Hutton, M.N.Z.M., 52 ; IncU-x, 73. Pisania antarctica, 

 Reeve : Hutton, T.N.Z.I., xvi, 231 ; not of Reeve. 



Shell not large, fusiform, very solid, usually spirally ridged. Sculp- 

 ture consisting of numerous narrow spiral ridges, much more prominent 

 upon the base, the interstices with fine spiral threads ; two or three 

 whorls below the protoconch are axially costate ; growth-lines oblique, 

 fine. Colour whitish or cinereous, very often with light-brown narrow 

 spiral bands ; aperture purplish-brown within ; outer lip white or with 

 a few brown patches ; sometimes the whole shell is covered by a 

 blackish coating. Spire elevated conic, height almost that of the aper- 

 ture with the canal ; outlines but little convex. Protoconch minute, of 

 2 smooth and convex whorls. Whorls 8, first slowly increasing, the 

 last high ; they are very lightly convex, depressed below the suture ; 

 the base contracted. Suture not much impressed. Aperture very 

 little oblique, narrowly oval, distinctly channelled above, produced 

 below into a moderately long, recurved, and open canal, notched at 

 the base. Outer lip flatly convex, sharp, much thickened inside, and 



