In a recent important article in the “Records of the Albany Museum, South Africa,” vol. i, No. vi (1906), pp. 347–404, pls. vi–x, Professor Schwarz describes some interesting fresh material from the Bokkeveld Beds, and is able to add several new species to the steadily growing list. Incidentally he is led to criticise some previous work done by me on the Brachiopoda and Mollusca from the same beds. Whilst I welcome the new light he is able to throw on several of the obscure fossils with which I had to deal, I must demur to some of his conclusions, cspecially in the case of the Brachiopoda; and accordingly, as my opinion on his paper has been specially asked by other workers on this fauna, a few remarks appear to be requisite. It must not be forgotten that the specimens in all cases are poor and unsatisfactory, but Professor Schwarz has had the advantage over me of more abundant material.