G2 NEW SPECIES OF TASMANIAN MOLLUSOA, ETC. 



Merelina sculptilts, sp. nov. 



Shell solid, broadly ovate, cream coloured, imper- 

 fcrate ; whorig five, rounded, the first two forming a smooth 

 proto-conch. Suture well defined by a deep channel. The 

 adult whorls are crossed by radials, which are strong, and 

 predominate on the two upper whorls, but grew finer and 

 much more numerous on the body whorl. These are crossed 

 by spirals, which from being at first inferior, become on 

 the body much the stronger. The body whorl carrie-s 

 about thirteen spirals, of which the upper three are large, 

 rounded, and noduled by the axials. The lower snirals 

 are narrow, and scarcely affected by the ribs, which fade 

 at the periphery. Seven spirals cross the ribs on the 

 middle whorl, of which the one above the lower suture, 

 and the two below the upper suture are the stronger, the 

 latter forming rows of nodules ; the third whorl isi similar. 

 Aperture ovately-pyriform, the columella, which is) not 

 continuous, is rather expanded anteriorly; outer lip thin, 

 dentated by the sculpture. 



Length, 3 ; breadth, 1.5 mill. 



Type, with three others, from 50 fathoais off Thouin 

 Bay. 



From its nearest relative F. fih,cincta, Hedley, it may 

 be distinguished by its flatter whorls, much more numerous 

 axials, the strong beaded spirals on the shoulder, the 

 channelled sutures, the discontinuous peristome, and the 

 sharp outer lip. 



PI. XV., fig. 15. 



HaupvAkta supra COSTA ta, sp. nov. 



Shell small, rather elongate, yellowish white, semi- 

 transparent ; whorls four, rounded, suture deeply im- 

 pressed. The apical whorl is small, dome shaped, and 

 smooth ; the next is tabular and finely spirally groO'ved ; 

 the last two axially ribbed with strong oblique ribs, which 

 bend towards the left at the suture. There are about six 

 on a half-turn of the whorls; they fade away below the 

 periphery, and are crossed by fine distant lirge, which are 

 scarcely raised, and show as white opaque lines on the 

 translucent shell. Aperture roundly pyriform, lip ex- 

 panded and continuous, projecting beyond the whorl 

 posteriorly. 



Length, 1.7; breadth, .8 mill. 



Type, Frederick Henry Bay, taken from a root of the 

 giant kelp. Three others from 40 fathoms oft Thouin Bay ; 



