Species and Geographic Distribution of the Lichadacea

Abstract

This paper undertakes to allocate the species of Lichadian trilobites, of which a revised classification has been published.1 Descriptions and illustrations have been supplemented by study of specimens in the Museum of Comparative Zoology and several collections in England and Scotland. A few species, based on fragmentary material or described in publications not available to the author, are excluded. Each species name is followed by geologic and regional range, as indicidated in publications. The writer wishes to thank Professor P. E. Raymond, who supervised this study, as well as the following men, who permitted examination of collections: Professor E. B. Bailey and Drs. Weir and Curry, of the Hunterian Museum, Glasgow; Dr. Murray Macgregor and Mr. F. W. Anderson, of the Scottish Geological Survey; Dr. C. J. Stubblefield, of the Museum of Practical Geology, and Mr. Withers, of the British Museum. Mr. James L. Begg lent part of his collection.