58 
CATALOGUE OF THE 
JURASSIC BRYOZOA IN THE YORK MUSEUM. 
The rarity of well preserved specimens of British Jurassic 
Bryozoa renders it necessary to see all available material before 
an adequate description of this group can be undertaken. 
The Bryozoa are not forms that can be determined by a hasty 
examination in a day’s visit to a Museum, so that I am 
especially grateful for the opportunity given me on the kind 
recommendation of Mr. Platnauer for a careful study of the 
small but interesting series in the York Museum. The 
collection includes 31 specimens, of which five are inde¬ 
terminable; the 26 remaining represent 10 species belonging 
to six genera. Two specimens are of considerable interest, as 
they admit of precise description of forms previously inade¬ 
quately known ; these are the type of Phillips’ Cellaria smithi 
and a well preserved fragment of the same author’s Millepora 
strimineci. Four of the species have not been recorded in 
England ; two of the others are new, but will be described 
later, and are here recorded only ; much better material, which 
admits of a careful anatomical study, is preserved elsewhere. 
These I hope to describe in a Monograph of the Jurassic 
Bryozoa; an attempt at a justification of the classification 
followed, and the acceptance of Ulrich’s order Trepostomata 
will then be given. 
Order : Cyclostomata. 
Family : Stomatoporidae. 
Genus: Stomatopora. Bronn ; 1825. 
Species : Stomatopora smithi (Phillips). Fig. 1. 
Fig. 1. 
