14 MR. G 1". ANGAS ON NEW AUSTKALIAN SHELLS. [Jail. 3, 



3. Columbella (Mitrella) bicincta, ii. sp. (Plate I. fig. 3.) 



Shell fusiform, smooth, somewhat thin, of a pale brown colour 

 throughout, with two narrow opaque white bands, irregularly articu- 

 lated with orange-chestnut spots, situated above and below the margin 

 of the sutures, the second band being in the centre of the last whorl, 

 and with very faint longitudinal zigzag markings here and there, more 

 distinct toward the base ; whorls 8 ; sutures impressed ; spire acu- 

 minated, longer than the aperture ; aperture elongately ovate, rather 

 short ; outer lip sharp at the edge, thickened externally, and some- 

 what coarsely denticulated within ; inner lip shining, with a few 

 slightly elevated nodules, the edge nearly straight and erect ; channel 

 slightly curved and somewhat produced, transversely striated exter- 

 nally. 



Length 5 lines, breadth 2 lines. 



Hab. Port Jackson, dredged near Watson's Bay. 



4. Columbella (Mitrella) attenuata, n. sp. (Plate I. 

 fig. 4.) 



Shell acuniinately fusiform, moderately solid, smooth, shining, 

 brown, with a pale band below the sutures ; whorls 8, very slightly 

 convex, the last grooved at the base ; spire attenuated, blunt at the 

 apex, apical whorls darker; sutures impressed; aperture small, sub- 

 ovate ; outer lip simple, arcuate, contracted at the base, variced be- 

 hind, varix dark brown ; columella nearly straight, callus slightly 

 reflexed in front ; canal short, a little recurved. 



Length 4 lines, breadth 1 line. 



Hub. Dredged near the "Sow and Pigs," Port Jackson (Brazier). 



An elegant little species, distinguished by its very elongated form 

 and its simple bands of light and dark brown. 



5. Hyalina (Volvarina) mustelina, n. sp. (Plate I. fig. 5.) 



Shell elongately ovate, light brown, with two grey bands bordered 

 above and below with darker brown ; spire short, apex obtuse : 

 nucleolar whorls edged with dark brown ; base rounded ; aperture 

 somewhat narrow ; columellar lip a little arcuate below, with four 

 equidistant plaits, the upper one nearly transverse, the others pass- 

 ing obliquely upwards ; outer lip thickened, slightly inflexed, flatly 

 variced behind, cream-coloured, the brown bands passing over the 

 varix, finely dentate at the inner edge with about twenty teeth. 



Length 2\ lines, breadth 1 line. 



Hab. Dredged off the "Sow and Pigs," Port Jackson ( Brazier). 



6. Marginella ochracea, n. sp. (Plate I. fig. G.) 



Shell subtriangularly ovate, rather thin, smooth, shining, more or 

 less of a pale stiaw-colour, and frequently with a faint orange effuse 

 band next to the suture on the last whorl ; whorls 4 ; spire obtusely 

 conical, very blunt at the apex ; aperture rather narrow ; outer lip 

 variced and thickened in the middle, the varix of a paler colour than 



