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Chelodina.

C. Colliei. West Australia.

C. oblonga West Australia.

Few specimens are known of the first species; the second is common near King George's Sound and the Southern Districts of the Swan River Colony. The shell is not produced, and affords no shelter to the very long neck of the animal. According to Dr. Gray it is found in North Australia also. Mr. George Masters has frequently taken specimens in the brakish lakes on the West coast.

C. expansa.

This is rather a large species, 11 inches long by 8 broad; it does not occur near Sydney, and inhabits the larger rivers. Coloration, uniform greenish above and yellowish below, without marble spots.

C. longicollis. Long-necked Tortoise.

This animal occurs in large numbers near Sydney; it is the most common and best known of the tribe; the lower shell is generally marbled.

C. sulcata.

Dr. Gray figures a shell of this Tortoise in his catalogue of shield reptiles; it occurs near Sydney, but is seldom captured.