AUTHOR'S PREFACE. 



consultation in reference to points on classification, I 

 am much indebted to Mr. E. Kirkpatrick, of the 

 Zoological Department. I must also express my thanks to 

 Miss G. M. Woodward for the preparation of the very 

 elaborate and beautiful drawings of the Bryozoa which 

 illustrate this Catalogue and the cases of specimens in the 

 Geological Gallery. 



J. W. GREGORY. 



GEOLOGICAL DEPARTMENT, 



BRITISH MUSEUM (NATURAL HISTORY), 

 IZth May, 1896. 



