vine: paleontology of the wenlock shales. 
235 
2. Favosites Forbesii, Edw. & Haime. (Tabulate Cor., Nich., 
p. 258.) 
= Favosites Forbesii, Ed. & H., Brit. Foss. Cor., p. 258. 
Examples of this well-marked species are present in several 
horizons of the shales, but as small spheroidal or globular coralla, the 
longest of which is rather more than a quarter and less than half an 
inch in depth and breadth. 
3. Pachypora frondosa? Nicholson, Tab. Cor., pp. 94-95, fig. 17. 
There are a few fragments in my collection belonging to a small 
group, the type of which may be taken as P. (Alveolites) frondosa, 
Nich., while others are closely related to, as yet, undescribed species 
found in the Cincinnati rocks of America. 
4. Pachypora cristata = Favosites polymorpha, Lonsd., Sil. 
Sys.,p. 684, Ed. 1839. 
Favosites cristata, Ed. & H., Brit. Foss. Cor., p. 260. 
Examples of these species are found in the shale washings, but 
it is impossible to depend on external features, as a means of identi- 
fication. Sections must be made of suspicious bits, and then, if there 
be a careful comparison both of the descriptive text and figures, all 
the details brought to light by Professor Nicholson (Tab. Cor., p. 87, 
pis. iv. and v.) will be observed. The corallites radiate from the 
axis of the corallum, diverging outwardly to open on all sides of the 
free surface, their walls are thickened by " schlerenchyma," especially 
towards the mouth. The calicos are sometimes rounded, with greatly 
thickened margins, and are usually of two sizes : generally speaking, 
from two to two-and-a-half occupy the space of a line. 
5. Syringopora fascicularis, Ed. & H., Brit. Foss. Cor., p. 274. 
I have only rarely obtained examples in "fasciculse," as des- 
cribed by Edw. & Haime. Fragments of single corallites are abundant, 
and I am not surprised to find that some of these are referred to by 
authors as Aulopora sp., Goldfuss. 
6. Syringopora serpens, Ed. & H., Brit. Foss. Cor., p. 275, pi. Ixv., 
fig. 2-2a. 
= ? Aulopora conglomerata, Lonsd. Sil. Sys., p. 675. 
Found generally in fragments, and some separated corallites 
closely resemble Aulopora. 
