238 
vine: paleontology of the wenlock shales. 
be described as a stellar plate, with a circular opening in the middle. 
Tabulae in both the larger and smaller corallites, less fully developed 
in the former. 
Localities: Buildwas beds; No. 37 rare, Nos. 36, 38 and 40 very- 
abundant. Water-worn and identified only by sections — Coalbrook- 
dale and Tickwood beds; rare also and water- worn in shales over 
Wenlock limestone. 
15. Callopora fletcheri, Edw. & H. (Nich. Op. Cit., p. 122, 
pi. vii., 5-56. 
Professor Nicholson is quite right in separating these species, 
for though not so abundant in the Buildwas shales as the above, it is 
fairly plentiful. At the same time, I cannot help remarking that 
the difficulty of identifying the Buildwas examples witli those from 
the Wenlock limestone is very great. 
With regard to the contents of the list now presented to the 
Palaeontologist, it must not be presumed that it gives an account of 
the whole of the Wenlock shale fauna, for that would be by no means 
a correct supposition. It is a list of the species found in the shales 
supplied to me by Mr. Maw; and though it may not be possible for 
me to add many more to the number of species, it is (j[uite possible 
that local students may be able to add to it considerably ; if such 
should be the case, I shall be glad to hear about the additions. 
Since this paper was written, Mr. Thomas Ruddy's list of Bala fossils has 
come to hand.* This compilation is the result of ten years' labour in collecting, 
and as the rang-e of certain fossils during the Palseozoio epoch was very wide, 
I have placed an asterisk (*) against the figures in the left-hand coL, provided 
the species indicated range from the Bala to the Wenlock seaa : otherwise I have 
not cared to load my list with references. 
♦Proceed. Chester Soc. of Natural Sc.. pp. iii.. 1884, published, 1886. 
