Published online by Cambridge University Press: 01 May 2009
The Palaeozoic rocks of the Girvan district have long been known for their rich faunal content, which has been studied by many palaeontologists. Trilobites are so abundant that they have been dealt with in a special monograph by Reed (1903−6). Since the publication of the monograph, however, continued collecting has made possible the description of further species and the amplification of many of the original descriptions; much of this has been accomplished by the publication of three supplements to Reed's monograph. The present paper is devoted to a consideration of the hypostomes of some Girvan trilobites. Professor A. E. Trueman has taken a keen interest in its preparation, and I desire to thank him for his very valuable assistance in correcting and improving the text; I must acknowledge again my indebtedness to Dr. F. R. C. Reed for the loan of literature.