Abstract
Whatever may be the worker's views on the origin of the Stegocephalia, and on the relation of the various divisions of the Pisces to one another and to the Amphibia, he cannot but agree that a knowledge of the anatomy and of the embryology of the Polypterini is of paramount importance to all those whose research or teaching is concerned with the evolution of the Vertebrata. So he will understand my pleasure when, through the kindness of Dr F. F. Bond, I was able to obtain from Old Calabar a number of specimens of the less-known genus of the Polypterini,Calamoichthys, which were so well preserved as to be excellent for dissection and, as a whole, quite good for histological detail.

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