Bry. 1 
IX. BRYOZOA. 
BY 
B. B. Woodward, F.L.S., F.G.S., he. 
Introduction. 
I. Titles .... 
II. Biology. 
General . . . 
Distribution. 
Geographical 
Geological . 
III. Systematic. 
Entoprocta . 
CONTENTS. 
Page 
. 2 
Ectoprocta. 
Gymnolaemata. 
Cyclostomata 
Trepostomata 
Cryptostomata 
Chilostomata. 
Ctenostornata 
Phy lact ol semat a. 
Page 
. 4 
. 5 
. 5 
. 5 
. 6 
INTRODUCTION. 
Very little, unfortunately, lias been done during the past year in this 
branch of Zoology. The following papers are perhaps tho most note- 
worthy : — 
Harmer (6) has proved the occurrence of embryonic fission in a second 
genus ( Lichenopora ) of Cyclostomata, in which, however, the details differ 
from those in Crisia. 
Oka (17) concludes that the Ectoproctous Bryozoa have no nephridia, 
that which has been mistaken for them being only a mesodermal thicken- 
ing of the body-cavity, and wanting in the Gymnolaemata. The excre- 
tory function is carried on by free mesodermal cells. Entoproctous 
Bryozoa have what he terms pronephridia, and should be separated from 
Bryozoa proper, and placed near to the mesenchymatous worms. Plio- 
ronis approaches the Siphuculids more than it does the Ectoproctous 
Bryozoa. 
All students of tho group will lament the sad loss of Dr. MacGillivray, 
whoso posthumous work (8) on tho Tertiary Bryozoa of Victoria has 
been completed by T. S. Hall. In it several new genera and families 
are established. 
Attention may be called to the important palaeontological work by 
Ulrich (23), with its “Systematic Classification of Palaeozoic Bryozoa.” 
This scheme, however, appears to have been printed off before the remain- 
ing text, and some of the new genera described in the later pages have 
been consequently omitted, whilst the order given has not been adhered to. 
