200 
vine: polyzoa of the wenlock shales. 
illustrations represent the foraminated basal portions. Fig. 8 repre- 
sents the normal branch. 
Fig. 1 1 Rhopalonaria botellis Vine, typical example. I have this 
form both with calcareous coverings and with cast like excrements 
without the coverings. Without opportunities of studying both 
features it would be difficult to found a type. 
Fig 1 2. li. botellis, but with double features. It is through a type 
like this that one may trace resemblance to Stomatopora elongata, 
but the openings indicated in some of the cells are not cell mouths, 
but the dark brown mass, whatever it may be, exposed through the 
broken calcereous cover previously referred to. 
Figs. 13 to 16. Stomatopora dissimihs, Vine. Fig. 13, about natural 
size adherent to crinoid stem. Fig. 14 enlarged, showing regular 
Stomatopora features with circular (normal) cell mouths. Fig. 15 
showing one cell with a flattened lower lip; and fig. 16 with a slightly 
wrinkled, not exactly ribbed cell, with a peculiar orifice, probably 
an ovacell. 
Fig. 17. Typical Stomatopora elongata. Vine. 
Fig. 18. Coral covered with encrusting Diastoporella consimilis 
about natural size. 
Fig. 19. Portion shewing where two colonial growths meet at the 
edge — colonies originating from different centres. 
Fig. 20. Enlarged typical cells of D. consimilis. 
Fig. 21. Characteristic features of the more typical Entalophora 
escharaforma. Vine. This is drawn from a chalky covered fragment, 
which are rather rare in the shales. 
Fig. 22. Specimen showing double features, but without any 
chalky covering. In specimens we meet with cells similar to No. 21, 
and in other parts of the same no escharaform features are seen, but 
isolated openings, which may probably ally the form with some 
specimens identified as Ceriopora occulata. Gold. In sections the 
cells are tubular without tabulae. Internal parts of the branches 
occasionally hollow. 
Figs. 23-24. Polypora ? problematica. Vine. This pecuUar fossil 
is found rather frequently in the shale washings, both free branch, 
ing and with the branches inosculated, but the cell openings 
