194 Proceedings of the Royal Society of Victoria. 



Obs. — Our commonest form is that described by T. Woods 

 ■under the name of Acmaea alba, but we have been unable to 

 • distinguish this from Patella chapmani, except that the latter 

 shows a more striking development of the radial ribs, which 

 project over the margin and give the shell a more stellate appear- 

 ance, but with a good series of specimens there can be no doubt 

 about their connection. 



Patella hepatica, Pritchard and Gatliff, nom. mut. 



1891. Acmaea striata, Pilsbry (non Quoy and Gaimard). 



Man. Conch., vol. xiii., p. 47, pi. 35, f. 27, 28, 



29. 



Hab. — Back Beach, Sorrento; Western Port, Flinders and 



San Remo ; Anderson's Inlet and Kilcunda (W. H. Ferguson) ; 



Apollo Bay. 



Obs. — The shell as figured by Pilsbry agrees well with our 

 species, but we have Ijeen unable to see its identity with Acmaea 

 striata, Quoy and Gaimard, and we have not been able to make 

 out any other identification, so that it appeared to us necessary 

 to treat it in the above manner. 



Patella perplexa, Pilsbry. 



1891. Acmaea saccharina, var. perplexa, Pilsbry, Tryon. 

 Man. Conch., vol. xiii., p. 50, pi. 36, f. 69-71. 

 Hab.— Port Phillip. 



Obs. — Our specimens agree well with Pilsbry's figui'e and 

 description and indicates a well-marked stellate form. There has 

 been some confusion of this form with P. saccharina, Lin., and 

 P. stellaris, Quoy and Gaimard, which we regard as quite distinct 

 from the above. 



Family Acmaeidae, 



Genus Acmaea, Eschscholtz, 1828. 



Acmaea costata, Sowerby. 



1839. Lottia costata, Sowerby. Beechey's voy., Zool., 



p. 147, pi. 39, f. 2. 

 1865. Patella alticostata, Angas. P.Z.S. Lond., p. 56, 

 pi. 2. f. 11. 



