207 



Patella aculeata, Keeve. 



I'atella acuU'ata, live., Concli. Icon., 1855, vol. viii., pi. 

 xxxii., f. 90; Augas, Proc. Zool. 8oc., 18G7, p. 221, No. 224; Ten- 

 Woods Proc. Roy. Soc, Ta.siii., 1878 lor 1877, p. 45; J3razier, 

 Pixx). Linn. 8oc., N.S.W., 1883, p. 224; Tate and May, 

 Proc. Linn. Soc, N.S.W., liiUl, vol. xxvi., pt. S, p. 410; Pritcharcl 

 and Gatliff, Proc. lioy. Soc, Vict., 1903, xv. (n. s.), pt. 2, p. 

 193; P. (scutellastra) aculccda, Rve., Pilsbry., Man. Conch., vol. 

 xiii., p. 100, pi. 25, fig». 20, 21, pi. Ixii., figs. 71 to 75. 



P. squamifera, Reeve, Concli. Icon., pi. xxxii., f. 94; Angas, 

 loc. cit., No. 225; Pritchard and Gatliff, loc. cit, p. 193. 



Found in numbers un the rocks at Port MacDonneU. As 

 Tenison-Woods says of P. ustulata, Reeve, it lives "below 

 low water" on the rocks on the ocean shore ; it is commonly 

 covered with nuUipore, is very liable to erosion when old, and 

 then is almost indistinguishable during life from Acmcea 

 alticostata, Angas. It may, if uneroded and not hidden, be 

 almost black over the ribs and interspaces, or in the inter- 

 spaces only, or in broken concentric rings, or of a wholly 

 yellowish-brown tint. Internally some are uniformly white, 

 but for a few brown smears at the apex ; others have the 

 spatula (which is never very distinct) tinged with deep chest- 

 nut, or blotched with black, or with a bluish reflex. The in- 

 terior may be horn-coloured, with an indistinct ring of white or 

 greenish-blue between it and the spatula, or bluish with smears 

 of brown. The margin may be light brown or dark brown 

 or black or purple, with white sulci at the ribs. There 

 may be bluish radii from summit to border. The ribs may 

 be very prickly, with erect scales, or only rugose. The 

 interstitial riblets may vary in the same shell from one to 

 six, and in different individuals there may be only one or 

 as many as six in each. 



Patella hepatica, Pritchard and Gatliff. 



Patella hepatica, Pritchard and Gatliff, Proc. Rov. Soc-., Vict., 

 1903, vol. XV. (n. s.), pt. 3, p. 194. 



Acmcea striata, Pilsbry., (noii Qiiov and Gaimaixi), Man. 

 Conch., vol. xiii., p. 47, pi. xxxv., figs. 27, 28, 29. 



Taken dead on beach at Port MacDonnell. 



Obs. — The last three species resemble one another, and 

 differ from the F. tramoserira series in being crenulated 

 along the inner margin. I found all three at Port Mac- 

 Donnell ; P. aculeata alive on the rocks, P. ustiilata and P. 

 hepatica on the beach. But I found forms intermediate be- 

 tween them, so that it became impossible to say whether 

 they should be placed in one species or the other. In fact, I 

 had grouped all together as "P. ustulata, and made two varie- 

 ties — at the one extreme with marked ridges, which were 



