As We Have Three Very Distinct Species Which Have Not Yet Been Described Or Figured In Any Of The Works Which Have Passed Under My Inspection, I Shall Proceed To Detail Their Peculiar Characters And Give Figures Of Their More Characteristic Features.

The drawing of "the UKODKO or smaller Murray cray-fish" most nearly resembles ASTACUS QUINQUE-CARINATUS, but it is

Three or four times larger than any of the specimens of that species which we possess, and the figure does not shew any indications of the five keels on the front of the head. In wanting the keel on the thorax it agrees with an Australian species described by Mr. Milne Edwards under the name of ASTACUS AUSTRALASIENSIS, said to come from New Holland, and to be about two inches long, while Mr. Eyre's figure is more than six inches, and is said not to be taken from a large specimen. It differs from Mr. Milne Edwards' figures, in having only one spine on the wrist, so that probably there are still two more species of the genus to be found in Australia.

Mr. Eyre in his notes states - "The Fresh water cray-fish, of the smaller variety; native names, cu-kod-ko, or koon-go-la, is found in the alluvial flats of the river Murray, in South Australia, which are subject to a periodical flooding by the river; it burrows deep below the surface of the ground as the floods recede and are dried up, and remains dormant, until the next flooding recals it to the surface; at first it is in a thin and weakly state, but soon recovers and gets plump and fat, at which time it is most excellent eating. Thousands are procured from a small space of ground with ease, and hundreds of natives are supported in abundance and luxury by them for many weeks together. It sometimes happens that the flood does not recur every year, and in this case the eu-kod-ko lie dormant until the next, and a year and a half would thus be passed below the surface. I have often seen them dug out of my garden, or in my wheat field, by the men engaged in digging ditches for irrigation. The floods usually overflow the river flats in August or September, and recede again in February or March. For further particulars respecting the modes of catching the eu-kod-kos, vide vol. ii. pages 252 and 267."

"I have spoken of this cray-fish as the SMALLER variety as respects the Murray. It is LARGER than the one found in the ponds of the river Torrens at Adelaide; but in the river Murray one is procured of a size ranging to 4 1/2 lbs., and which is QUITE EQUAL in flavour to the FINEST lobster."

These latter have not yet been received in any of our collections, so that we are unable to state how it differs from those now described: they must be the giants of the genus.

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