234 AUSTRALIAN AND POLYNESIAN LAND AND MARINE MOLLUSCA, 



described by Keeve in 1858, as Lithodomus barbatus, and Modio- 

 laria barbata, described by Angas in 1867. 

 11. Tapes polita. 

 Tapes polita, Sowerby, Thes. Conch, vol. ii., p. 682, pi. 145, fig. 



15, 16, 1852. Deshayes in Cat. Conch, of JBiv. Shells in Brit. 

 Mus., p. 172, No. 37, 1853. Tapes infiata, Desh. Proc. Zool. Soc, 

 p. 8, pi. 19, fig 3 ; Conch. Brit. Mus., p. 162, No. 6. 



Tapes polita, H. and A. Ad. Bee. Moll., vol. ii., p. 435, 1857. 



„ (Pidlastra) inflata, H. and A. Ad., vol. ii., p. 436. 



,, (Textrix) polita, Bonier, Malk. Blat., p. 29, No. 13, 

 1864. 



Tapes polita (Textrix) inflata, Homer, Malk. Blat., p. 29, No. 



16, 1864. 



Venus inflata, Pfeiffer in Conch. Cab., Kiister ed. p. 210, p. 34. 

 fig. 4, 1869. 



Hab. — Port Jackson and Port Stephens, New South Wales, 

 8-10 fathom mud (Brazier.) 



When Mr. Sowerby described and figured this species in the 

 Thesaurus Conchyliarum, there was only one specimen known, 

 found by the late Mr. Strange, in mud at a depth of six fathoms 

 at Sydney. Mr. Cuming appears to have received another so-called 

 species from Ceylon, but I very much doubt the specimen or 

 specimens being finer and larger than polita. Mr. Deshayes 

 describes it under the name of Tapes inflata, without ever compar- 

 ing Sowerby' s species with it ; in Cuming's collection I have 

 hundreds of specimens of polita, Sowerby, and inflata, Desh. in 

 all stages of growth, that is half an inch, one inch, one inch 

 and a-half, two inches, and three inches long, and broad in 

 proportion near the ventral margin, there are two or three very 

 slight riblets, these riblets are seen in nearly all specimen of 

 polita, when the animal enlarges the valves, the riblets become 

 ribs and get broader ; of the inflata form, when fresh, the inside 

 under the umbones is always orange, from the very youngest 

 specimens of polita up to the psuedo species called inflata. 



Pfeiffer in Martini andChem. Conch. Cab., Kiister edition, 1869, 

 only figures Deshayes F. inflata. 



