199 



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, 

 Reeve. . 



Acmaea calamus, Crosse and Fischer. 



Patella calamus, Crosse and Fischer, Journ. de Conch., 1864, 

 p. 348, and 1865, p. 42, pi. iii., figs. 7, 8; Verco, Trans. Roy. Soc, 

 S.A., 1912, vol. xxxvi., p. 184. 



Var. polyactina, Verco. 

 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. 



Acmaea septiformis, Quoy and Gaimard. 



Patelloida septiformis, Quoy and Gaimard, Voy. ' 'Astrolabe '■' 

 Zool., 1834, vol. iii., p. 362, pi. lxxi., figs. 43, 44: Verco Trans. 

 Roy. Soc, S.A., 1912, vol. xxxvi., p. 184. 



King George Sound beach, up to 15 mm. long and 12 mm. 

 wide; Ellensbrook, 3, worn; Yallingup, 1, worn; none fur- 

 ther north. 



Acmaea subundulata, Angas. 



AcmcEa subundulata, Angas, Proc. Zool. Soc, London, 1865 

 p. 155; Verco, Trans. Roy. Soc, S.A., 1912, vol. xxxvi.! 

 p. 185. 



A number were taken on the beach at Esperance Bay, 

 but none further west. 



Phenacolepas calva, Verco. 



dva, Verco, Trans. Roy. Soc, 

 viii., figs. 9, 10; also op. cit., 



King George Sound beach, 1 ; in 14 fathoms, 1 



Scutellina calva, Verco, Trans. Roy. Soc, S A 1906 vol 

 xxx p. 217, pi. viii., figs. 9, 10; also op. cit., 1912,' vol. xxxvi ' 

 p. 185. 



