40 On the Characters of Astele. 



dilated into a thin prominent undulated fringe, plaited into 

 large and regular folds. 



Inhabits Flinder's Island, Bass's Straits, and the north- 

 east coast of Tasmania, (Mus. Dr. Milhgan.) 



Shell about 1^ inches broad and 1 inch high, of a uniform 

 fulvous white or light fawn, destitute, like the other species 

 of this group, of any bright colours or distinct markings. 



The transverse strise, on the upper surface, are slender, 

 very irregular, or rather undulated, and are imbricated by 

 the lines of growth, which are very near each other; equally 

 irregular are the striae on the under surface of the body 

 whorl, occupied by the fringe : but those in the centre are 

 regular and concentric, and are from five to six in number. 

 The umbilicus is quite closed, although concave in the 

 middle, and in old shells its enamel forms a prominent 

 elevated rim all round the aperture. The plaiting of the 

 sutural fringe is only half as many in number as are the 

 longitudinal ridges. 



3 Carinidea granulata. Plate VI., figs. 5 and 6. 

 Granulated ridged Trochus. 

 Shell trochiform, suture depressed, or more or less carinated, 

 upper half of the whorls with obhquely waved ribs ; lower 

 half with transverse series of granules, body whorl beneath 

 slightly convex ; the margin more or less carinated. 



Inhabits Flinder's Island andBass's Straits, (Dr. Milligan). 

 Shell resembhng a Trochus m general appearance, neither 

 the suture nor the body whorl being very decidedly cari^ 

 nated, except when in a young state. It nevertheless truly 

 belongs to this genus, both by the concave, but not perfo- 

 rated, umbilicus, and by the strong calcareous operculum. 

 Its full size never exceeds W of an inch broad, and A high. 

 The granulated appearance of the lower portion of each 



