The algal nature of the genus Koninckopora Lee; its occurrence in Canada and western Europe

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Abstract
I. I ntroduction D uring investigations in the Windsor Limestone (Mississippian) of Cape Breton Island, Nova Scotia, a striking tubular bed was discovered. Sections of these bodies (PL IX, fig. 1) showed them to be partly composed of a complex calcareous alga apparently new to science. The same species was discovered by the author in a collection from the Cracoe district of Yorkshire made by Mr. G. Bond, and further research proved it to be widespread in England. Search through the literature dealing with corals and bryozoa revealed that this form had been described as a coral by de Koninck in 1842, and made the type of a new bryozoan genus Koninckopora by Lee in 1912. During the present investigation over 75 microscope slides of Koninckopora have been studied and all available material has been examined. Much kind help has been received during this investigation. Mr. W. N. Edwards of the British Museum stimulated the work by his interest and allowed me to borrow the specimens of Koninckopora under his charge, Professor W. F. Whittard generously sent the whole of the S. H. Reynolds collection of rock sections for inspection, Mr. T. A. Jones of Liverpool permitted me to go through his collection of slides and borrow many of them, and Mr. G. Bond of the Imperial College collected specimens from Cracoe and showed where they occurred in The visit to Canada was only possible through the aid of the Tyrrell Fund of the Geological Society of London, while many of the

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