180/.] MR, G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 933 



Fam. Pectinid.e. 

 12S. Pecten tegula. 



Ostrea tegula, Wood, Judex Test. Supp. p. 7, pi. 2; Reeve, Conch. 

 Icon. pi. 30. f. 136. 



This fine species is distinguished by the irregular foliaceous scales 

 that ornament the ribs. It varies considerably in colour, from yel- 

 lowish orange, purplish grey, and dull red, to a fine rich chocolate- 

 brown, with whitish scratch-like lines towards the umbones. Found 

 amongst rocks and under stones at low water in Port Jackson. 

 Length 2| inches. It is also met with at Moreton Bay and New 

 Caledonia. 



129. VOLA FUMATA. 



Peetenfumatus, Reeve, Conch. Icon. Pecten, pi. 7. f, 32. 



The right valve is very convex and broadly ribbed ; and the left 

 Talve concavely flattened, rayed with twelve narrow, raised, rather 

 distant ribs, and immersed in the right valve. The deep smoky, 

 purple colouring and the produced recurved beak of the right valve 

 are peculiar. Dredged in sandy mud in Lane Cove and Middle 

 Harbour. Length 3| inches. 



Fam. Radulid^. 



130. Radula lima. 

 Ostrea lima, Linn. 



Lima squamosa, Lam. ; Sow. Thes. Conch, pi. 21. f. 17, 18. 



This widely distributed species is not uncommon amongst rocks 

 and under stones at low water in Port Jackson, and at WollonKon<r 

 and Port Stephen, &c. Length 2 inches. ° 



131. Radula (Limatula) bullata, 

 Ostrea hidlata. Born. 



Limafragilis (var. b), Lara. ; Sow. Gen. of Shells, f. 3. 

 ^ A narrow, inflated, nearly equilateral, white shell, longitudinallv 

 ridged with the. ears almost equal. Under large stones and slabs 

 ot rock at low water in Watson's Bay and Middle Harbour &c. 

 Length \\ inch. 



The animals of Z. hullata form a sort of nest amongst the frag- 

 ments of broken shells and corals in the rock-pools, where the°v 

 dwell gregariously. ^ 



Fam. Anomiice. 



132. Placunanomia (Monia) ione. 

 Placunanomia ione. Gray. 



n Ti"'/,"^ 'P'"''' '^''^^'■' ^'■°™ ^- '^^'i'^rocMsma, Dcsh. (from the 

 Gult of lartary), in having the plug large and triangular. It is 

 lound attached to the under surface of rocks at low water near Port- 



