vine: polyzoa of the wedlock shales. 
181 
papers, and it is only fair to say that both he and Mr. James Hall 
regard some if not all the members of the Monticuliporidae group 
as bryozoons. It is to this group, species of which are abundant 
in the "VVenlock shales that I wish to direct attention in the after 
part of my serial papers, and though I am inclined to agree rather 
with Prof. Nicholson, than with American authors generally, I will 
accept the American work for my present labours, for the sake of the 
admirable details so honestly worked out by Mr. E. 0. Uhich and by 
Mr. Hall. By adopting this method I shall be able to publish 
descriptions of ths British species, and correlate American and 
British forms that would not otherwise be possible. Of the classifi- 
cation of the Polyzoa proper, the C)^clostomatous species especially, 
I have followed my own arrangements as formulated in the 4th 
Brit. Association Report on Fossil Polyzoa, 1883. This part of my 
labours differs but slightly from that of Mr. E. 0. Ulrich, but in the 
new sub-orders, independently established by us, our arrangements 
differ greatly ; this however will be pointed out further on. 
I have not, in this part of my papers, redescribed species that 
were previously worked out and published elsewhere, but notes and 
full references are given. It will be in the latter part of this series 
that original investigation will be introduced. 
Class Polyzoa. 
Bryozoa (part). Hall, Ulrich, Prout and Authors. 
Bryozoa, Ruess, Manzoni, Waters, &c. 
Polyzoa, Nicholson, Busk, Hincks, &c. 
Order 1. Phylactolemata, Allman. 
Unrepresented in a fossil state. 
„ II. Gymnolemata Allman. 
Sub-order I. Paludicellea, (fresh water). Unrepresented. 
„ II. Cheilostomata, Busk. Unrepresented (?) 
III. Cyclostomata, Busk. Prevailing sub-order. 
„ IV. Ctenostomata, Busk. Unrepresented (?) 
„ V. Cryptostomata, Vine. For palaeozoic species. 
Of these sub-orders of the Gymnolemata, only the third and fifth 
so far as is at present known, are represented in the palaeozoic rocks 
