VINE: CARBONIFEROUS POLYZOA. 
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England or Ireland, tlien the Scotch species is new, but rather than 
make it such, in the meantime I shall leave it as it is, and distinguish 
it as G. bipinnata ? Phillips.” After this letter was written Mr. 
Young sent me specimens of this species, and I shall use it in making 
my comparison with the Derbyshire fossil. 
11. Glauconome bipinnata? Phillips. Palaeozoic Fossils of Devon, &c. 
Zoarium , a long stem which branches rather acutely at 
distances about four lines apart ; in the intervals of the larger 
branches, smaller pinnae, four to a line, are placed alternately on each 
side of the main stem. Zooecia on the main stem, orifices oval, two 
in the intervals of the small pinnae, or about eight to a line on each 
side of a not very prominent mid-rib ; cells on the branches similar 
to the main stem ; cells on the pinnae rather smaller, and more 
closely set. Reverse striated, or slightly granulated. 
Localities : Upper Devonian, Pilton, Croyd ; Oastleton, Derby- 
shire ; Ireland, (McCoy), Blantyre ? and Capelrig ? Scotland. The 
Glauconome of Settle, Yorkshire, is not in a sufficiently good state 
of preservation to allow me to describe the species. 
In the Carboniferous Limestone of Derbyshire there are several 
varieties of this peculiar type, one of which possesses a very strong 
main stem, pinnate and bi-pinnate as already described. I cannot, 
however, regard it as a distinct species, the only additional character 
is its robustness. The arrangement of the cells are similar. I can 
only suppose that this additional feature is the result of age. 
A reference to my former paper will show directly, the differ- 
ence between the character and abundance of Glauconome in 
North Yorkshire and in Derbyshire. For a long time I regarded 
the Retepora pluma of Phillips (Geol. York. pi. I., fig. 14-15) as a 
Glauconome, but the careful working of the type seems to dispel 
this idea. In all probability fig. 13, pi. I., Geol. York, is the reverse 
of G. bipinnata ? Phillips, but it is hard to say. 
Genus Rhabdomeson, Young. 
Ann. Mag. Nat. Hist., January, 1874. 
12. Rhabdomeson gracilis, Phillips sp. Palaeozoic Fossils, Devon, &c. 
(See North Yorkshire Polyzoa by G. R. Y , Trans, op. cit). 
I have only detected a few fragments of this species in the 
Derbyshire Limestone specimens. The species has a very wide range. 
