674 
A. W. WATERS ON FOSSIL CYCLOSTOMATOUS 
A6, Fosstz Cyctostomatous Bryozoa from Austratia. By ARTHUR 
Wu. Waters, Esq., F.G.S. (Read June 25, 1884.) 
[Paves XXX. & XXXI] 
I wave already described in the Journal of this Society the Chilo- 
stomatous Bryozoa from Curdies Creek, 8.-W. Australia (vol. xxxvii.), 
Mount Gambier, South Australia (vol. xxxviii.), Bairnsdale, Gipps- 
land (vol. xxxvii.), and Muddy Creek, Waurn Ponds, and Bird 
Rock, Victoria (vol. xxxix.). But the Cyclostomata I kept back, in 
order to deal with them all together; and since I completed my 
last paper I have received for description from Prof. Tate an inter- 
esting collection from Murray Cliffs and Aldinga *, South Australia, 
and all are now considered together. I have also in my hands a 
collection of fossils (belonging to Miss E. C. Jelly) from Napier, 
New Zealand, to which I allude in the text. 
The determination of the Cyclostomata presents much greater 
difficulties, and is much more unsatisfactory than that of the Chilo- 
stomata, as there are fewer characters which can be used, so that 
classification has been made to depend principally upon the mode of 
growth—a character which has frequently proved of no value in the 
Chilostomata. Until within a recent period this was in both con- 
sidered the main characteristic; but now, thanks to the labours of 
Smitt, Hincks, and other recent workers, it has been shown te be 
of secondary importance in the classification of the Chilostomata, 
which, however, possess many distinctive characters, such as the 
* The Chilostomata from the “older Tertiary” of Aldinga and the River 
Murray Cliffs are very similar to those already described from the other 
Australian localities; and although they have not yet been thoroughly exa- 
mined, a provisional list will show this similarity :— 
cylindriformis, W., 
Membranipora Lepralia burlingtoniensis, W., Ald. 
Cl 
and M. Cl. 
radicifera, Hincks, M. Cl. 
rhynchota, Busk, M. Cl. 
aperta, Busk, Ald. 
Micropora patula, W., Ald. and M. Cl. 
Monoporella crassatina, W., Ald. and 
M. Cl. . 
sexangularis, Goldf,, Ald. 
Steganoporella magnilabris, B., M. Cl. 
Cribrilina terminata, W., M. Cl. 
figularis, Johnst., M. Cl. 
radiata, Moll, M. Cl. 
Microporella elevata, Woods, M. Cl. 
and Ald. 
coscinopora, ss., M. Cl. 
symmetrica, W., M. Cl. 
introversa, W., M. Cl. 
Microporella (Lunulites) magna, 
Woods, Ald. 
Porina coronata, Rss., Ald. and M. Cl. 
—— edax, Busk, M. Cl. 
depressa, var. as from Bairns- 
dale, Ald. 
Smittia Tatei, Woods, Ald. and M. Cl. 
seriata, Rss., M. Cl. 
Schizoporella simplex, var., Ald. 
vulgaris, Moll, Ald. 
—— phymatopora, /ss., M. Cl. 
striatula, Sm., M. Cl. 
fenestrata, W., M. Cl. 
Mastigophora Dutertrei, Aud., M. Cl. 
Rhynchopora bispinosa, Johnst., M. Cl. 
Retepora. 
Cellepora fossa, Hasw., Ald. and M. Cl. 
verruculata, Sm., M. Cl. 
Lekythopora hystrix, MacG., M. Cl. 
Lunulites guineensis, Busk, Ald. 
Selenaria maculata, B., M. Cl. 
parvicella, Woods, M. Cl. 
