332 
VINE : CARBONIFEROUS POLYZOA. 
have three species wholly unrepresented in the Yorkshire Shales. 
1. Synocladia scotica, Young". 2. Glauconome robusta, Young". 
3. Thamniscus Rankini, Young. I cannot build much upon the 
other species, because the Shales are not of my own washing, 
and the coarser debris I have not received. For the purpose of 
this comparison I have examined about the same weight of 
material, and the colour of the Shale from both localities is of the 
same dark muddy character found in the Shales of many of the 
upper Limestone series of Scotland Since this examination was 
made I have had an opportunity of studying the Polyzoa of the 
Upper Limestone Shales of Gare. Here, also, there is a resem- 
blance between species found in all three of the districts named 
above. I cannot help the conclusion, therefore, that the same 
seas which ebbed and flowed over that part of Scotland, now 
called Gare and Belstonburn, ebbed and flowed also over the 
Northern part of Yorkshire, Durham, and Northumberland. In 
the difference of specific types we may have some partial evidence 
of the depths of the seas, but in the absence of other fossils we 
cannot build much upon this. 
It is pleasing to note the varied ranges of some few of the 
rarer species of Polyzoa. The Eyphasmapora Buskii, Eth. Jun., 
is rather plentiful in the lower Limestone Shales of Scotland, 
though compared with other species found in the same Shales it 
may be characterised as not frequent. I have several specimens 
from the lower Limestone Shales of Hairmyres, — it is found at 
High Blantyre and in the Shales of Brankemhall. I have detect- 
ed fragments in the Welsh Shales. I have no record of the 
species in the upper Limestone Shales of Scotland, but I have 
fragments from the Northumberland Shales, Ridesdale, and also 
specimens from Hurst. 
Rhabdomeson gracile has a very wide range. It was originally 
described by Phillips as occurring in the Pilton group of Devon ; 
it is present in nearly all the Shales of the upper and lower Lime- 
stone series, including the Calciferous Sandstones of Scotland. 
