182 



Helcioniscus limbatus, Philippi. 



Patella limbata, Philippi, Abbild und Besch, Conch., vol. iii.,. 

 p. 71; (Helcioniscus) Verco, Trans. Roy. Soc, S.A., 1907, vol. 

 xxxi., p. 100. 



It is very common, large, and beautiful in St. Francis 

 Island, where H. tramosericus, Martyn, is very rare and small. 

 I did not take it anywhere in Western Australia. Mr. Hedlejr 

 in "The Marine Fauna of Queensland," in the Australasian 

 Association for the Advancement of Science, 1909, p. 355 r 

 does not include either of these species, nor in his Addendum, 

 p. 809. It would seem, therefore, to be restricted to Tas- 

 mania and the southern shore of Australia. 



Patella ustulata, Reeve 



Patella ustulata, Reeve, Conch. Icon., 1856, vol. viii., pL. 

 xxxi., figs. 88a, SSb ; Verco. Trans. Roy. Soc, S.A., vol. xxx., 

 1906, p. 206, and vol. xxxi., p. 99. 



Taken at Venus Bay, and many at St. Francis Island, 

 up to 32 mm. long by 26 mm. broad. 



Patella aculeata, Reeve. 



Patella aculeata, Reeve, Verco, Trans. Roy. Soc, S.A., 1906, 

 vol. xxx., p. 207. 



Taken alive on the rocks on St. Francis Island up to 

 36 mm. by 26 mm., so that as far west as this the size is 

 maintained. 



Patella stellaeformis, Reeve 



Patella stellceformis, Reeve, Conch. Systematica, 1842, vol. ii., 

 p. 15, pi. cxxxvi:, fig. 3; Pilsbrv, Man. Conch., vol. xiii., 1891, 

 p. 98, pi. xvii., figs. 25-27, pi. lVi., figs. 62-65; Tate and May, 

 Proc Linn. Soc, N.S.W., 1901, vol. xxvi., part 3, p. 410. 



Patella pentagona, Reeve, Conch. Icon., 1854, pi. xx., figs. 

 48a, 48b, 48c (non Born Mus. Test. Vindobonensis). 



Var. Patella chapmani, Tenison-Woods, Proc Roy. Soc, Tas- 

 mania, 1876 (1875), p. 157; Verco, Trans. Roy. Soc, S.A., 1906, 

 vol. xxx., p. 208. 



Var. Acmcea alba, Tenison-Woods, Proc Roy. Soc, Tasmania, 

 1877 (1876), pp. 155, 156; Verco, Trans. Roy. Soc, S.A., 1906, 

 vol. xxx., p. 208. 



I think Tate and May were right in regarding P. chap- 

 mani, Tenison-Woods, as conspecific with P. st dice f omits, 

 Reeve ; but the two types are so unlike that the former may 

 well be regarded as a good variety of the latter. 



Taken at Rosetta Head, Encounter Bay (Tate), Tyringa 

 Beach, Venus Bay, numerous and foliaceous but small, and 

 Fowler Bay on the west coast ; and on St. Francis Island up 

 to 27 mm. by 20 mm. by 7'5 mm. 



