G. R. Vine—Carboniferous Polyzoa. 505 
varieties of M. interporosa. Had Mr. Etheridge contended for the 
variety, I should not have disputed his claim, but as he introduces 
a most anomalous genus into the classification of our Carboniferous 
Polyzoa, I cannot do otherwise than point out the anomaly. 
Defrance’s genus Vincularia had no existence whatever in Palaeozoic 
times. D’Hichwald, on whose authority Mr. Etheridge rests, is most 
unreliable on this point.' 
It is on account of their importance that I have dwelt so fully upon 
these species. They had a wide geographical range in Carboniferous 
times, and though their variability is great, they have many structural 
characters in common with the Ceriopora which range into the 
Mesozoic and Tertiary strata. 
Under the auspices of Sir Richard Griffith, Bart., Frederick M‘Coy 
published his “Synopsis.” There is ample evidence in this work 
that M‘Coy had much better material than Phillips, and his drawings 
and diagnosis of species are more elaborate. M‘Coy adds no fewer 
than twelve species of Fenestella to our British Polyzoa. They are 
F. plebeia, carinata, formosa, crassa, multiporata, ejuncida, frutex, 
hemispherica, Morrisii, oculata, quadri-decimalis, and varicosa. As I 
shall have to speak of these farther on, I will leave the list without 
any further comment. 
M‘Coy retains a few puzzling forms under the name of Gorgonia. 
These are G. assimilis, Lonsd.; G. Lonsdaliana, M‘Coy; and G. zic- 
zac, M‘Coy. 
Another fenestrate genus, introduced by M‘Coy, bears the name of 
Piylopora. There is a feather-like arrangement in this genus; a 
central stem giving off lateral branches which are connected by 
dissepiments having oval fenestrules. enestella owes its expansion 
to the bifurcation of its branches. Ptylopora very rarely bifurcates, 
there is a basal extension of the polyzoary along the central stem. 
One species is recorded by M‘Coy—P. pluma—but it is a genus that 
deserves to be more closely studied than it has been. In naming 
some fossils lately for Mr. John Aitken, F.G.S., from the neigh- 
bourhood of Castleton, Derbyshire, I detected several small frag- 
ments of this beautiful genus. The broad central stem, whenever 
fenestration was absent, might easily be mistaken for a robust 
Glauconome. 
The Glauconome which M‘Coy figures and gives descriptions of 
are, G. grandis, G. gracilis, and by his discoveries he extends the 
range of Phillips’s G. bipinnata.® 
Vineularia I have already repudiated, and the V. parallela, Phill., 
which M‘Coy accepts as a type, I have alluded to when describing 
Phillips’s species. The Berenicea megastoma, M‘Coy=Diastopora, 
Mor. Cat., will be placed in the genus Ceramopora, on account of 
its many well-marked characters.* 
Having all the material at hand for the work, I shall now discuss 
1 See paper on Vinewlaride, mihi. Read before the Geol. Soc. June 23, 1880. 
2 Synopsis of the Carb. Foss. of Ireland, 1844. 
8 Upper Devonian, Croyde, Pilton, Devon, Phill., Palaeozoic Foss. 
* See paper on Diastoporide, mihi; read before the Geol. Soc. May, 1880. 
