56 NEW SPECIES OF TASMAMIAN MOLLUSCA, ETC. 



ing, but the ground colour seems always to be some shade 

 of purplish-brown. It may be blotched with green and 

 whitish in various degrees of pattern. 

 PL XIV.,, figs, la, lb. 



Apaturris costifera, sp. nov. 



Shell small, fusiform, white with a broad chostnut 

 band on the centre of the body-whorl. Whorls 5^ rounded, 

 the first two being quite smooth, the rest sculptured with 

 strong, rounded axial ribs, fo-urteen on the penultimate, 

 sixteen on the body whorl, they fade away a. little below 

 the periphery. The base being encircled by numerous fairly 

 strong spiral lirae ; the ribs are' crosaed by very fine, sharp 

 spiral threads. Aperture fairly large, pointed above, broad 

 at the base, where it scarcely becomes a canal ; columella 

 exca.vate, bearing twO' low tubercles, outer lip rounded and 

 simple. 



Length, 4.5; breadth, 2 mill. 



Habitat. TviDe, with five others from about 40 

 fathoms East of Tliouin Bay. 



This species closely resembles j\litroinorp]ia axico^taia 

 Verco. It is, however, a narrower shell, with more rounded 

 whorls, and the spiral lira? are much less strong; it has. 

 too, a more bluntly rounded apex, 



PI. XIV., fig. 2. 



Xepotilla diaphana, sp. nov. 



Shell smallj thin, of a semi-transparent texture, colour 

 j-ellowish-brov^n, pinkish towards the apex, broadly fusi- 

 form, whorls five, including a prominent two-whorled proto- 

 ccnch, which is strongly spirall}'' Urate; the adult whorls 

 much rounded, and strongly cancellate. There is a. hollowed 

 space below the suture, corresponding with a shallow sinus, 

 and ornamentieid bv curved growth lines ; etrong axial ribs 

 cross the whorls and are separated by spaces of about their 

 own width : they number about twentj^ on the body whorl 

 and fade awa}^ below the periphery; they are crossed on 

 the spire b}^ three spirals, less strong than the riba and 

 about equally spaced, so that square meshes are formed, 

 producing small nodules at the junction. These spirals^ 

 continue on the base, where they are smaller and closer 

 together. Aperture broad, with a very short open canal, 

 cC'lumella excavate, with a narrow callous lip, outer lip 

 rounded, corrugated by the sculpture, with a broad rather 

 shallow sinus at the suture. 



Lcnsth 4.4 ; breadth, 2 mill. 



