215 



general brownish colouring. The base is of a faint apricot 

 tint, which also tinges the columellar teeth. Near the base 

 is a band of deep brown spots of varying size, which are found 

 also on the base of the body-whorl ; the anterior end and the 

 lower third of the depressed spire and the adjacent part of 

 the outer lip are of a dark walnut-brown. 



A slightly older specimen, from 100 fathoms, is 3'5 

 in. long, 2"5 in. wide, 'and 2"2 in. high, has fewer brown 

 spirals, with 36 outer and 26 inner and 4 intermediate teeth, 

 the outer lip is rather more thickened, and the flat dorsal 

 spirals are slightly more conspicuous. 



I have had five examples of the Tasmanian form to com- 

 pare it with, as well as the figures given by all the above- 

 mentioned authors. Mine differs in shape, being more globu- 

 lar, higher, and wider, not only relatively, but absolutely. 

 Mr. May kindly lent me two very diverse examples, which 

 respectively measured 4*4, 2'3, 1"9 in. and 3'4, 21, 1'8 in. in 

 length, breadth, and height, whereas mine is 3'9, 2'5, 2*2 in. 

 Allowing, therefore, for the greater length of the anterior and 

 posterior prolongations in Mr. May's large specimen, which is 

 probably a senile change, mine is still more globular. It is 

 interesting to notice the greater similarity between my speci- 

 men and the type, whose dimensions are: Length, 3'8 in.; 

 and breadth, 2 '3 in., which is different from that of most 

 specimens. Sowerby does not give the height of his shell, 

 nor a figure in profile, and it is difficult to estimate this from 

 his figure, but it seems less elevated than mine. The concave 

 depression on the under-surface of the forward projection is 

 much less in mine, and the posterior curve of the aperture, its 

 upward bending and the twist to the left are more marked. 

 The colour is very different. The fairly uniform peppering 

 with dark spots, the white base, the brown wide blotch over 

 the middle third of the base of the body-whorl are wanting 

 in mine, while the apricot base and the lilac side are absent 

 from the typical shells. 



It may be that the shape is due to its habitat in the quiet 

 waters of 100 fathoms, and that though mature it is not senile, 

 and its colouring to its having been taken alive instead of 

 being washed up and partially bleached on the shore. But we 

 will hope other specimens may be secured which will determine 

 its right to be called a good species. 



Type in my collection. 



Trivia australis, Lamarck. 



Cyprcaa australis, Lamarck, Anim. S. Vert., 1822, vol. vii., 

 p. 404, and 1844 (Edition Deshaves), vol. x., p. 545, "The seas 

 of New Holland" (M. Macleay) ; Sowerby, Conch. Ilhis., 1832, 



