Murdoch and Suter. — Be suits of Dredging. 295 



species may represent the Aclis (Rissopsis) hyalina, Hutton,* the 

 type of which seems to be lost. Hutton's species is unfigured, 

 and the description scarcely sufficiently full to identify it with 

 certainty. In any case Aclis hyalina, Hutt., cannot stand, 

 the name being preoccupied by Watson. 



42. Scala zelebori, Dunker. 

 Verhandl. Zool. Bot. Gesellsch., Wien, vol. xvi, 1866, p. 912. 

 Two damaged young shells. 



43. Scala levifoliata, n. sp. Plate XXV, figs. 35, 36. 



Shell small, turreted, imperforate, many-whorled, longi- 

 tudinally laminated, with a few spiral ribs and small sub- 

 orbicular aperture. Sculpture : Spire - whorls bicarinate, the 

 slope uniform from the suture to the upper carina, situate on 

 the lower half of the whorls ; the lower carina is less conspicuous 

 and close to the suture ; the last whorl is tricarinate with the 

 basal keel microscopically granulate, and below this is a well- 

 marked furrow bounded by a small concentric rib, which mar- 

 gins the columella ; on the lower part of the shoulder two 

 indistinct spiral threads, more obscure on the upper whorls. 

 The longitudinal ornamentation consists of obliquely advancing, 

 close, delicate, undulating, and sharp laminations, extending 

 over the suture, and terminating at the basal carina. Colour 

 greyish -white. Spire elongate, turreted, sharply pointed. Pro- 

 toconch consisting of about two small rounded whorls, the 

 nucleus with the initial half-turn smooth, the other half longi- 

 tudinally delicately ribbed, which is followed on the second 

 whorl by the sharp laminations of the ephebic stage. Whorls 

 10, regularly increasing, with straight sides above the keel, 

 slightly concave between tho encircling ribs. Suture deep 

 and channelled, which character is hidden to a great extent 

 by the longitudinal laminations extending over it. Aperture 

 ovato-orbicular, angled above. Outer and basal lip rounded, 

 slightly effuse, sharp, and with flexuous projections corre- 

 sponding to the spiral keels ; columella concave, very little 

 callous, terminating at the base in a minute sharp point. Al- 

 titude, 57 mm. ; diameter, 162 mm. 



Type in the Colonial Museum, Wellington. 



Obs. A most graceful little shell, of which there are but two 

 dead specimens, one not full-grown. We are informed by Mr. 

 C. Hedley that he is describing a nearly allied form from Aus- 

 tralian waters. 



* New Zeal. Journ. Sci., vol. ii, 1884, p. 173 ; Proc. Linn. Soc. N.S.W., 

 vol. ix, 1885, p. 935. 



