155 
specific variations of the former; being in fact their lineal 
descendants by evolution,—that the only other explanation was, 
that the Hscharide, or operculated forms of Mesenteripora 
were a new creation, introduced about the cretaceous period. 
Such a view Mr. L. could not entertain, as the two groups 
agreed so closely in all their characters, and even in their 
specific variations. 
Mr. Loner gave a synopsis of the several genera of Oolitic 
Polyzoa described by Hams. His list contained 19 genera, 
including several exceptional and perhaps doubtful groups. 
Those genera which appeared from Haris’ list to be prevalent 
groups and represented by several species, were well illustrated 
by specimens shown by Mr. L. from the Cotteswold beds. 
The more abundant and best represented groups were— 
Alecto—(Stomatopora.) A. 
Diastopora—(Berenicia. H.) 
Diastopora H. 
EHlea, &c. D’Or- 
bigny. 
Eschara and Dias- 
topora. Miche- 
lin. 
Mesenteripora 
Cricopora—(Spiropora.) H. 
Apseudesia. 
Theonoa. 
Lichenopora. 
Terebellaria. 
Heteropora. 
Ceriopora. 
These groups were represented by several enlarged illustra- 
tions, and by numerous specimens, which Mr. L. had gathered 
from the “Pea Grit” beds of Cleeve and Crickley hills, the 
Great Oolite beds on the hills near Bath, and from the French 
beds at Luc, Nauville, and Arromanches, near Caen. 
In the discussion which ensued, Dr. Wricut took exception 
to Mr. Lonee specifying the genus Hschara as occurring in the 
Oolite, whereas it did not occur until the later formation of 
the Chalk. 
Dr. Smuyrue remarked that much credit was due to Mr. Loner 
for his zeal and labour. He (Dr. 8.) had taken part last year, 
in association with Professor Brauns, of the University of Halle, 
in working out the fossil Bryozoa of Metz, and comparing them 
with our English species. His share in this is acknowledged in 
the article on the Bryozoa of Metz, published last year in Berlin, 
by the German Geological Society. On the critical points now 
in question, he quite agreed with Dr. Wricut. 
nN 2 
