158 
vine: notes on British eocene polyzoa. 
Thanet. 
London Clay. 
S " 
■ 3 00 
Barton. 
' . Oligocene. 
Recent. 
My own Cabinet. | 
Genera and Species. 
Cheilostomata, Busk. 
1 
Dittosaria Whetherellii, Busk 
X 
2 
Membranipora Lacroixii, Aud, ... 
X 
X 
X 
X 
V 
3 
„ ? crassa, Desm.... 
X 
X 
V 
4 
Biflustra eocena, Busk 
X 
5 
Diachoris intermedia, Hks. 
X 
X 
Membraniporella nitida, John ... 
X 
C, 
„ var. eocena 
X 
V 
Microporella violacea, John. 
X 
7 
„ var. (a) fissa, Waters ... 
X 
X 
v 
var. (b) 
X 
8 
Eschara? Brongniartii, M, Ed.... 
? 
X 
V 
9 
? sp. 
X 
V 
10 
Cellepora petiolus, Lonsd. 
X 
X 
V 
11 
,, sp. (pumicosa ?) 
X 
X 
12 
Lunulites urceolata, Lanik. 
X 
X 
V 
Cyclostoraata, Busk 
13 
Crisia sp. (eburnea ?) 
X 
X 
14 
*Idmonea coronopus, Def . 
X 
X 
? 
V 
15 
f „ gracillima ? Reuss 
X 
16 
Hornera (minuta ? sp. n.) 
X 
I 
17 
,, flabelliformis ? Blainv .. 
X 
* I. Atlantica? 
t AUiod to if not ideatical with Reuss's species. 
Description of Species." 
Generally 1 have followed the classification of Mr. Hincks in 
British Marine Polyzoa. Some of the species, however, especially 
those adopted from Mr. Busk and Mr. Lonsdale, I have allowed to 
remain under the generic terms adopted by these respected authors. 
Sub-Order Cheilostomata Busk. 
Family Gemillarid^e Busk. 
Genus, Dittosaria, Busk. 
1860. Polyzoa of the London Clay, Geol. Mag.^ vol. III., p. 8. 
Znarium rigid, calcareous, dichotomous. Zomki adnate by the 
back, and throwing out a double cell at each dichotomy. 
* Note.— Nearly the whole of the species of Eocene Polyzoa referred to in this 
paper have been figured, and the reader will find at the end ample descriptions 
of the plate v. 
