A. W. WATERS—REPORT ON THE BRYOZOA. 249) 
Reports on the Marine BroLoagy of the SUDANESE Rep SekA, from Col- 
lections made by Cyrit Crossnanp, M.A., B.Se., F.Z.S.:; together 
with Collections made in the Red Sea by Dr. R. HAartMEver.— 
XV. The Bryozosa. By Artaur Wm. Waresrs, F.L.S8. 
Part II. 
CYCLOSTOMATA, CTENOSTOMATA, ann ENDOPROCTA. 
(PLaTEs 24 & 25.) 
[ead 16th December, 1909. } 
THESE collections of the Red Sea Cyclostomata, Ctenostomata, and Endoprocta, 
representing but few species, have been studied together with the other 
collections made by Mr. Crossland from Zanzibar and Cape Verde Islands, 
and when the description of these is reached I hope to be able to add some 
details. 
When considering the Ctenostomata I indicate the direction in which it 
seems that we must work in order to make the classification more satis- 
factory, and show that the Stolonifera of Ehlers contains : firstly, some 
species having usually a thick stem to which the zoccia are directly 
connected asin Zvobotryon ; and, secondly, others with a creeping filamentous 
tube or rhizome, which expands in places, and from these swollen nodes the 
zocecia grow, in most cases from a joint attached to the expansion. It is now 
proposed to limit the Stolonifera to these last, of which Hypophorella and 
Farella may be taken as typical; and then the first group remain as 
Vesicularina. In Vesicularinaa gizzard seems to be universal, but is not 
found in the other group. Details concerning the gizzards are given in the 
paper. Unfortunately I do not possess satisfactory specimens of several of 
the Ctenostomata, and therefore only locate some of the genera tentatively, but 
hope shortly to obtain specimens of other genera from which to cut sections. 
It will be noticed that nearly all the Cyclostomata and Ctenostomata from the 
Red Sea are also known from the Mediterranean. In this and the previous 
paper 99 Red Sea species and varieties are referred to; of these, 34 are known 
from the Atlantic, 26 from British Seas, 39 from the Mediterranean, 34 from 
Indian and neighbouring seas, 18 from Crossland’s Zanzibar collection, 8 from 
Japan, and 36 from Australia. 
Since my previous paper was written Membranipora limosa. Waters, has been 
recognized by Levinsen from Formosa Channel. 
LINN. JOURN.—ZOOLOGY, VOL. XXX. 19 
