186/.] MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 221 



Fam. Patellid^. 



222. Patella tramoserica. 



Patella tramoserica. Mart. Univ. Conch, i. pi. 16. 



This fine species is abundant everywhere, adhering to the rocks 

 between tide-marks. It varies considerably in colour and markings, 

 tyj)ical specimens being characterized by a golden-yellow tinge, more 

 or less articulated with black and scarlet. Length 2 inches. 



223. Patella costata. 



Patella costata, Sowerby, Voy. of Beagle. 



A boldly ribbed conical shell, with a pectinated margin, edged 

 with black. On rocks at Coodgee and WoUongong. Length 

 1^ inch. 



224. Patella aculeata. 



Patella aculeata. Reeve, Conch. Icon. pi. 32. f. 90. 



Strongly nodulously ribbed, of a pale colour, both within and with- 

 out. Occasionally met with on the rocks outside the Heads. 

 Length \\ inch. 



225. Patella squamifera. 



Patella squamifera. Reeve, Conch. Icon. pi. 32. f. 94 a, b. 

 A small squamately ribbed depressed species, of rare occurrence. 

 Rocks near WoUongong and Bondi Bay. Length 10 lines. 



226. Patella pentagona. 



Patella jjeniagona. Born, Mus. Test. Yindob. 



P. stellceformis. Reeve in Conch. Syst. ; Conch. Icon. pi. 20. 

 f. 48 a, b, c. 



A single example of this species was found on the rocks near Port 

 Jackson Heads. Length 8 lines. 



Fam. Chitonid^. 



227. LOPHYRUS AUSTRALIS. 



Chiton australis. Sow. Mag. Nat. Hist. 1840 ; Conch. 111. f. 46. 



Common under stones in Port Jackson. Of a dark olive-colour. 

 This is the largest species found in New South Wales. Length 

 3 inches. 



228. LOPHYRTJS CONCENTRICUS. 



Chiton concentricus, Reeve, Conch. Icon, pi, 16. f. 95. 



A very beautiful longitudinally ridged species, with the terminal 

 valves concentrically grooved ; mottled with green and straw-colour, 

 the second valve sometimes blood-colour or scarlet. Under stones 

 at Watson's Bay, at very low tide. Length 1| inch. 



