vine: polyzoa of the wedlock shales. 
199 
as affinis, punctata, and granulosa, though there is a difficulty 
in identifying C. oculata. Then again another question arises in 
the mind of the systematist — are these really Polyzoa ? If we say yes, 
then there are other species that are placed by one palaeontologist 
with the Coelenterata, and by another with the Bryozoa, such as 
Csenites, Millepora or Alveolites ? repens, Discopora (Lonsdale), 
and even Monticulipora Petropolitana Pander."' 
As examples of most of these species are present in the shale 
washings, together with others apparently or really allied to them, 
it would be unwise on my part, in spite of the difficulties referred to 
above, to leave them out entirely. These, however, with other un- 
described species will form the subject matter of another paper. 
Desckiption of Plate. 
Fig. 1. Crinoid stem enlarged about 2 diams., to fragments of 
which both Ascodictyse, Rhopalonaria and Stomatopora are generally 
attached. 
Fig. 2. Ascodictya filiforme Vine, with vesicles attached, but 
not in clusters. 
Fig. 3. A peculiar example of A. filiforme, with both root like 
processes and vesicle. 
Fig. 4. Transparent section of another example of A. filiforme, 
showing centrally dotted and continuous pulp-like pith, which is 
connected with the vesicles. 
Fig. 0. A radiciforme, Vine. 
Fig. 6. A stellatum, Xicli and Eth. var. siluriense, Vine. 
Fig. 7. A curious example of A. radiciforme, not common, but 
having peculiar features which seem to ally the form of S. elongata 
through Rhopalonaria. 
Fig. 8. One of the punctured forks of A. radiciforme which can 
be identified as related to forms previously described by Prof. 
Nich. and R. Eth. jun. (See Ann. Mag. Xat. Hist, June, 1877, 
pp. 463-468.) 
Figs. 9 and 10. Fragments also foraminated, but from both 
these specimens the original material has been rubbed off, and the 
* Discopora favosa, Lonsdale, ko. (See also Lindstrom's Cat. of Fossiis, lb85.) 
