INTRODUCTION. 35 



of which he included in one family. The monograph is worthy of 

 Haime's great reputation. 



Since this time there has been no general work on Jurassic 

 Bryozoa as a whole ; and we have only to notice papers on 

 separate faunas, or the descriptions of isolated species in works 

 on general Jurassic Paleontology. A list of these papers is given 

 in the Appendix ; and it is only necessary to say that the most 

 important contributions will be found under the names of Reuss, 

 Brauns, "Waagen, Sauvage, and Friren for Continental species, and 

 of Walford and Vine for those of England. 



9. THE BRITISH MUSEUM COLLECTION. 



Jurassic Bryozoa are upon the whole scarce. In some horizons 

 they may be abundant, but as a rule the Jurassic limestones may 

 be searched in vain for recognizable specimens. From some 

 English members of the Jurassic sequence, in which, from the 

 conditions of deposition, numerous Bryozoa might be expected, 

 I am not aware that a single specimen has ever been found. No 

 species has been previously recorded from either the British Port- 

 landian, Kimeridgian, or Corallian deposits. 



The British Museum contains, however, a fine series of Jurassic 

 Bryozoa, both English and foreign, most of which have been 

 obtained from the following collections : 



Brodie Collection. Rich in Inferior Oolite specimens from the Cotteswolds. 

 Purchased from the Rev. P. B. Brodie, F.G.S., in 1895. 



Brauns Collection. Bryozoa from Bavaria. Purchased in 1838. 



Bright Collection. Many specimens from Normandy. Presented by Benjamin 

 Bright, Esq., in 1873. 



Cunnington Collection. Specimens from the Jurassic of Wiltshire. Purchased 

 from Wm. Cunnington, Esq., F.G.S. 



Holl Collection. Mainly Inferior Oolite. Purchased from Executors of late 

 H. B. Holl, M.D., F.G.S., in 1887. 



Tesson Collection. An extensive series from the Bathonian deposits of Nor- 

 mandy. Purchased of M. Tesson, 1857. 



Vine Collection. Types of Vine's species from Cornhrash of Northamptonshire. 

 Purchased of Executors of G-. R. Vine, Oct. 1893. 



10. THE JURASSIC SEQUENCE. 



The following table shows the Jurassic sequence and the time 



divisions used in the present Catalogue. The principal localities 



from which the Bryozoa have come are given in the two last 

 columns. 



