725 



A BRITISH BIVALVE MOIA^V^Q (CRYPTO DON FLEXU- 

 OSUS, MONT.) FOUND IN AUSTRALIA AND TAS- 

 MANIA, WITH ITS DISTRIBUTION. 



By John Brazier, F.L.S., C.M.Z.S. 



In 1874, while dredging for the Macleay Museum off Port 

 Stephens, I obtained a number of odd and broken valves of a 

 Lamellibranch. A number of similar valves were dredged in 

 1880 by a party from the Australian Museum, also off Port 

 Stephens; these are refei'red to as Cryptodon, sp.nov., in my list 

 of the Mollusca then obtained \yide Australian Museum Report 

 for 1881]. Still more recently I have received on loan from Miss 

 Mary Lodder, a specimen of the same species dredged at Port 

 Esperance, South Tasmania. Careful examination has convinced 

 me that all the above examples are referable to Montague's 

 Cryptodon flexuosus, the species evidently being cosmopolitan. 

 Fullowing is the synonjmiy: — 



Cryptodon flexuosus, Montague. 

 Telliaa, flexitosa, Montague, Testacea Brittanica, p. 72, 1803. 



Venus sinuosa, Donovan, Nat. Hist. British Shells, ii. pi. 42, fig. 

 2, 1804. 



TeAlina Jiexiiosa, Maton and Rackett, Trans. Linn. Soc. viii. p. 56, 

 No. 16, 1807; Wood's General Conch, p. 188, pi. 47, figs. 7-8, 

 1815; Dillwyn's Descrip. Catal. Recent Shells, i. p. 99, 1817; 

 T.fl.exuosa .? Maton; Lam., Anim. sans Vert., v. p. 543, 1818. 



Ainphidesma flexuosa, Lam., loc. clt. v. p. 492, No. 9, 1818. 



Luciua sinuata, Lam., loc. cit. v. p. 543, No. 16, 1818. 



Tliyasira flexuosa, Leach; Lam., loc. cit. v. p. 492, 1818. 



Tel'ina fltxuosa, Turton's Conch. Dictionary of the British 

 Islands, ^. 177, 1819. 



