BY C. HEDLEY. 95 



with Victorian specimens from Western Port, kindly supplied by 

 Mr. J. H. Gatliff. 



The species is omitted from Tryon's Manual, and the original 

 description is insufficient for the recognition of the species. To 

 figures of one of my specimens, therefore, I add the following 

 description : — 



.Shell minute, above almost flat, below rounded and widely 

 umbilicate. Whorls two and a half, very rapidly increasing, so 

 that the outline of the shell approaches the figure of the Arabic 

 numeral 6. Apical whorls smooth, one and a half. Sculpture : 

 throughout closely, finely, spirally grooved; above is one and 

 on the base are two prominent spiral lyrse. The whole shell is 

 crossed by transverse sculpture, which is nearly suppressed for 

 most of its course, but appears in a series of fine denticules below 

 the suture, in beading on the major lyrse, and in basal ribs pro- 

 jecting teeth into the umbilicus. A small varix appears at a 

 whorl behind the aperture. Aperture very oblique, a round, 

 trumpet mouth, with a double, widely expanded lip, fortified 

 behind with a heavy varix. Major diameter 1-16, minor -84; 

 height -64 mm. 



Fissuridea lineata, Sowerby. 



(Plate iii., fig. 11.) 



This species was included by the earlier writers in the genus 

 Fissurella. Pilsbry in the Manual of Conchology placed it in 

 Glyphis, but he afterwards abandoned that name in favour of 

 Fissuridea of Swainson (The Nautilus, v., Jan. 1892, p. 104). 



The animal has not been yet described. It is not uncommon 

 in Sydney Harbour, living on rocks and among piles of loose 

 stones in clear sea water. Its movements are very sluggish; in 

 crawling the animal raises its shell to a considerable height as if 

 holding an umbrella over itself. When fully extended no part 

 of the animal envelops the shell. In striking contrast to the 

 asymmetrical, forward position of the shell in Lucapinella nigrita 

 (vide Proc. Roy. Soc. Vic. 1894, pi. xi.) is the central position of 



