For the catalogue and descriptions of the quadrupeds, reptiles, and shells, I am under obligation to Mr. J.E. Gray, of the British Museum. Mr. Vigors has kindly assisted me with the use of his collection, and his valuable advice with respect to the few specimens of birds that were preserved; and Mr. W.S. MacLeay has furnished me with a very valuable description of my entomological collection. I am also indebted to Mr. Cunningham for his remarks upon the botany of the country; to Mr. Brown, for his description of a new tree from King George the Third's Sound; and lastly to Dr. Fitton, for his kindness in drawing up for me a very interesting geological notice from the specimens that have been presented to the Geological Society of London, of which he is one of the most active and scientific members. ... VERTEBRATA. MAMMALIA. BY JOHN EDWARD GRAY, ESQUIRE, M.G.S., ETC. 1. Pteropus edwardsii, Desm. Mamm. 109. Madagascar Bat, Edwards' Birds, t. 108. Vespertilio vampyrus, Lin. Syst. Nat. 1 45. Flying Fox, Colonists of Port Jackson. This specimen, caught at Point Cunningham on the North-west Coast, appears to agree with Edwards' figure, and with the specimen preserved in the British Museum. There is also one in the collection of the Linnean Society from Port Jackson. Large flights of these animals were observed at Port Keats and in Cambridge Gulf, on the North-west Coast. This bat seems also to be very abundant on the Friendly Islands, for Forster describes having seen five hundred hanging upon one casuarina tree. Forster, page 187. 2. Canis australiae. Canis familiaris australasiae, Desmarest, Mamm. 191. Australasian Dog, or Dingo, Shaw's Zool. 1 278, t. 76. This animal is common in the neighbourhood of Port Jackson, and dogs, to all appearance of the same species, are found on all parts of the coast. Captain King presented a living specimen to Sir Everard Home, Bart., who sent it to Exeter Change. In considering this species as distinct from the common dog, I am supported by the opinion of Mr. William MacLeay*. (See Linnean Transactions 13.) (*Footnote. No such opinon has been expressed by Mr. W. S. Macleay in the place alluded to.--P.P.K. [added in "errata"]) Captain King informs me that these dogs never bark, in which particular they agree with the Linnean account of the American dog; that, in their appearance and cunning disposition, they resemble the fox; and although occasionally domesticated in New South Wales, they never lose the sly habits peculiar to their breed, nor can be prevented from killing poultry or biting sheep.