CLASS PISCES. 115 seventy or a hundred yards distant. These, probably, had at some time or other passed from the brook to the garden fence. Some of the most remarkable ichthyological observations of recent years are those of Prof. Grassi on the development of some species of Muraenidae, and particularly of the Com- mon Eel, which have been communicated to the Royal Society (Proc. Roy. Soc., vol. lx., pp. 260-271), and are summarised in the Essex Nat. (vol. ix., p. 261). The larva of the Eel is the little fish called by Pennant Leptocephalus brevirostris, which lives in abysmal waters, and is very rarely found floating on the surface. The form described by Yarrell as L. morrisii has been proved by Grassi to be the larva of the Conger Eel. The whole subject is one of the greatest interest to naturalists, and is an admirable example of the necessity and value of careful and long-continued observation of even the commonest species. I consider Eels the very finest and most delicious of our fresh-water fish, especially after they have left our rivers and taken up their residence in salt water. This statement may partake somewhat of the character of an Irish bull; but the meaning I wish to convey is that an Eel from salt water is free from muddy flavour, and is in every way superior to the same fish during its residence in fresh water. Genus CONGER, Cuvier. Conger vulgaris, Cuvier. Conger. Our sandy coast is not suited to the habits of this fish. An occasional one is, however, taken. One of 40 lbs. weight is recorded (Essex Standard, Jan. 31st, 1885) as having been picked up on the beach at Clacton-on-Sea. Day, quoting Donovan, says (Fishes of Great Britain, vol. ii., p. 253) one of 130 lbs. weight was captured at the Nore. In the Zoologist