04 THE PROCEEDINGS OF THE LINNEAN SOCIETY 



colour ; the foot is yellowish- white below, black above, as 

 also the mouth, which, however, is greenish near the mouth. 

 Hab. Sydney, Port Jackson. Height and diameter of the base, 

 9 lines." 



I find the same shell discribed thus, by Angas, in the Zool. 

 Proc, for 1867, p. 216 : — " No. 193. Trochocochlea concomerata. 

 Monotonia c. Gray, Wood's Index. Test. Suppl. pi. 6, fig. 35. 

 Faintly ridged, and painted with irregular wavy longitudinal lines 

 of yellow on a black ground. L. (sic, misprint for T. ?) striolatus 

 of Quoy, from Tasmania and S. A., is much more depressed, and 

 has a tesselated style of painting, although regarded as a 

 synonym by Mr. Hanley in his edition of Wood's 'Index? Same 

 locality as preceding. Long, 1 inch, 4 lines." 



Yet, 1 am afraid we must uphold Hanley's ruling. In the 

 first place, as we have seen Messrs. Quoy, and G. distinctly 

 state that they got their specimens from Port Jackson, and not 

 from Tasmania. Next the Tasmanian specimens in some 

 instances answer to Mr. Angas's description of them, and some- 

 times not. The truth is that the shell is very variable. It is 

 without exception, the commonest shell in Tasmania. Turn 

 over any flat stone at low water, and the under side will be 

 found covered with it, of almost every size, shape, and colour, 

 within the limits of the shell's character. I have seen some 

 specimens more than an inch in diameter, some almost conical, 

 some depressedly turbinate, some white, with green spots, some 

 black and yellow on diagonal lines, and some dull olive, with 

 few yellow spots. 



I now subjoin what I believe to be the synonomy of the 

 species : — 



Trochocochlea australis, Favanne, Conch., pi. 18, fig. A 1 ; Le 

 Ratelier, Chemn. Conch., tome 11, tab. 196, fig. 1890. 



Monodonta australis, Lamk., vol. 7, p. 35, No. 11. 



T. concamerata, Gray, Wood's Index, Test. Suppl., yl. 6. 



T. striolatus, Quoy and G., loc. cit. Angas, loo. clt. 



In the Encycl. Meth. Hist. Nat. des Vers, tome 3, p. 1081, 

 we find the following notice of the shell by Deshayes : — " This 



