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I sought carefully on every beach examined for his species, 
I could not find any shell to match his unique type specimen, 
and I think it is probably somewhat of a monstrosity as 
regards its comparative height. The lateral concavity of its 
borders is explained by its resting on some convex surface, 
while erosion has removed both sculpture and colour from its 
upper three-fourths. Although the shells gathered by me are 
so distinctive in some examples by their wholly deep-black 
exterior, their internal black border, and elate conical shape, 
I feel sure they are only a further variant of the shells 
taken from the same rocks which I have recorded under the 
name of A. flammea, Quoy and Gaimard, var. jacksoniensis, 
ah etionre Bbitav 
Aemyea calamus, Crosse and Fischer. 
Patella calamus, Crosse and Fischer, Journ. de Conch., 1864, 
. 348, and 1865, p. 42, pl. iii., figs. 7,8; Verco, Trans. Roy. Soc., 
SA, 1912, vol. xxxvi., p. 184. 
ae 
Var. polyactina, Verco. —@27eZ deca 
Taken on King George Sound beach, 6; at Yallingup, 
4; on Bunbury beach, 3; in Geographe Bay, 15 fathoms 
2, in 22 fathoms 3; off Fremantle, in 6 fathoms, 2; on Rott- 
nest Island, 3; “Cottesloe,” 1; ‘Geraldton,’ 1. This 
variety seems to replace the typical shell in Western Australia. 
NoO7oAcmea septiformis, Quoy and Gaimard. 
Patelloida septiformis, Quoy and Gaimard, Voy. ‘‘Astrolabe,’’ 
Zool., 1834, vol. ili., p. 362, pl. Ixxi., figs. 48 
, 44; Verco, Trans. * 
Roy. Soc., 8.A., 1912, vol. xxxvi., p. 184. 
King George Sound beach, up to 15 mm. long and 12 mm. 
wide; Hllensbrook, 3, worn; Yallingup, 1, worn; none fur- 
ther north. 
//o7oAcmea subundulata, Angas. 
Acmea_ subundulata, Angas, Proc. Zool. Soc., London, 1865, 
p. aoe Verco, Trans. Roy. Soc., S.A., 1912, vol. xxxvi., 
p- I 
A number were taken on the beach at Esperance Bay, 
but none further west. 
Phenacolepas calva, Verco. 
Scutellina calva, Verco, Trans. Roy. Soc., S.A., 1906, vol. 
es 217, pl. viil., figs. 9, 10; also op. cit., 1912, vol. xxxvi., 
p. ‘ 
King George Sound beach, 1; in 14 fathoms, 1. 
210 
