194 



Patella aculeata, Reeve 



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

 vol. xxx., p. 207, and 1912, vol. xxxvi., p. 182. 



Taken on the beach, King George Sound, 10, the largest 

 is only 23 mm. by 19 mm. ; Ellensbrook, 3, up to 21 mm. 

 long ; Yallingup, up to 14 mm. It was not taken above Cape 

 Naturaliste. The specimens seem to diminish in size and 

 scaliness as they go west and north, and are not so large as 

 the South Australian shells, which may attain 40 mm. in 

 length. 



Patella hepatica, Pritchard and Gatliff. 



Patella hepatica, Pritchard and Gatliff, Proc Roy. Soc., Vic- 

 toria, 1903, vol. xv. (New Series), part 3, p. 194; Verco, Trans. 

 Roy. Soc, S.A., 1906, vol. xxx., p. 207. 



Esperance Bay, 3, up to 17 mm. by 13 mm. ; "Albany" 

 (Dr. Torr), 20 mm. by 15 mm. by 6'5 mm.; Yallingup, 6; 

 Bunbury, 1. This — which is probably a variant of P. 

 ustulata, Reeve — is smaller than the Victorian shell, and 

 was not taken above Geographe Bay. 



Patella stellaeformis, Reeve. 



Patella stellceformis, Reeve, Conch. Sys., 1842, vol. ii., p. 15, 

 pi. cxxxvi., fig. 3; Verco, Trans. Roy. Soc, S.A., 1912, p. 182. 



Taken on the beach at Esperance Bay, 1, very large, 

 39 mm. long, 37 mm. wide, and 12 mm. high, and 3 small 

 specimens, scaly, with 8 ribs, the anterior splitting early into 

 two ; at Albany, many, 1 7-ribbed, the others 8-ribbed, out- 

 side speckled brown, inside white or brownish-yellow or 

 speckled red-brown; at Ellensbrook, very many, up to 22 mm. 

 long and 21 mm. wide and 6*5 mm. high, mostly 8-ribbed, 

 some 7-ribbed, others 9-ribbed, rough and speckled ; on Rott- 

 nest Island, several, up to 18 mm. long and 15 mm. wide and 

 6*5 mm. high. 



The reddish-brown specks outside may be arranged in 

 radial series on the ribs, or scattered irregularly on the sur- 

 face. Internally the spatula may be brown, but generally 

 white. There may be a red-brown line along the groove of 

 the ribs. No specimens of the polygonal variety, P. chap- 

 maid, Tenison- Woods, or of the variety Acmcea albida, 

 Tenison- Woods, were found. The typical forms were much 

 more numerous and foliaceous than on the eastern shores of 

 South Australia. 



Nacella parva, Angas. 



Nacella parva, Angas, Proc Zool. Soc, London, 1878, p. 862. 

 pi. liv., fig. 12; Verco, Trans. Roy. Soc, S.A., 1906, vol. xxx.; 

 p. 208. 1907, vol. xxxi., p. 101, 1912, vol. xxxvi., p. 183. 



