46 



10. Tapes undulata, Born. 



This species is not often used as an article of food in the 

 colonies, although allied species are usually eaten in other 

 countries. A very small species of an allied genus found 

 at Alexandria is used at Aden and Port Said as a common 

 article of food. 



11. Tridachna elongata, Lam. 



This species is common on the reefs on Lord Howe's 

 Island, and is palatable and nutritious. Like the " Clam," 

 it may be cooked in a variety of ways. 



12. Chione calophylla. 



This species is only obtainable by dredging or trawling, 

 unless baited traps be used. While evidence is wanting as 

 to its use as an article of food, being probably not found 

 in sufficient numbers, there is no reason to doubt its use- 

 fulness in this way. It was formerly much sought after by 

 conchologists, being a very ornamental species and some- 

 what rare ; lately, however, it has been found comparatively 

 plentiful at the mouth of the Paramatta river and Lane 

 Cove, on a black-mud bottom. 



13. Ostrea virescens, Angas. 



It is to be hoped that no naturalist would have the 

 hardihood to break open the shell of so rare a species for 

 the sake of the delicious morsel contained therein. Ostrea 

 virescens is only found at very low tides on certain islands 

 in Port Jackson. The specimens have been obtained from 

 Mr. John Brazier, C.M.Z.S., who has also been good enough 

 to furnish the scientific names of the shells mentioned in the 

 foregoing collections, according to the latest version by con- 

 chologists. 



