BT J. C. COX, M.D., F.L.S. 133 



I have never seen this species, and neither Eeeve or Hutton 

 mention if it is an attached species or not. 



Hutton gives the habitat of this species as Pelorus Sound, 

 Catlin Eiver, New Zealand. " A doubtful identification ; perhaps 

 the same as Ostrea edulis, Linn." — Hutton. 



Eeeve mentions that it is also found in Fiji. 



10. OsTREA RENiFORMis, Sowerhj. 



Figured in Eeeve's Conch. Icon., vcl. xviii., fig. 57. 



'' The Eock Oyster of Dunedin is referred with great doubt to 

 this species." 



Eeeve in his Monograph records it as coming from Australia, 

 which I think is a mistake. 



11. Ostrea mytiloides, Lamarck. 



Lamarch, in Animaux sans vertebres, Ostrea No. 21. Eeeve, 

 Conch. Icon., vol. xviii., fig. 3. 



A parasitic species, solid, oblong, attenuated towards the hinge, 

 plicato-crenated at the sides, deep violet, obscurely rayed, about 

 four to five inches long, and two wide, generally attached to the 

 Mangrove trees, and occupies a zone above low water mark in 

 the baj's and mouths of the Queensland Elvers. Mr. Brazier has 

 a specimen of this species from Port Jackson. 



12. Ostrea cucullata, Born. 



Born, Mus. Ind., Cses. Tab. vi., fig. 11, 12. Eeeve, Conch. 

 Icon., plate xvi., sp. 34, fig. 34, a. b. c. 



I do not consider this an Australian species. 



Eeeve states that Hanley has referred this species, which is a 

 very variable one to Ostrea cormicopice, Chemn., and Ostrea 

 Forslcaliy Chemn., with which he agrees, but gives no habitat 

 for it. I have included it in this list as it is to this species that 



