measures, roughly, 2cm. square. The laminae of the coenosteum, as seen 
In a vertical section, are well marked, and number from 4 to 6 in the 
space of one millimetre. In our specimen instead of an intermediate dark 
line in the laminae there is a lighter area, probably due to recrystallization 
of the substance of the platform. 
There can be very little doubt regarding the specific identity of this 
fossil, but in the absence of other sections and specimens it is here treated 
provisionally under the above name. 
The distribution of this species has hitherto been confined to Northern 
Europe. It has occurred at Dudley in England, at Wisbv, Gotland, and 
in Esthonia in the Baltic Provinces. All of these occurrences are in the 
Wenlock Series (Gotlandian), to which our own Deep Creek limestone- 
fauna is most nearly allied. 
CEPHALOPODA. 
Genus Protophragmoceras Hyatt. 
(?) Protophragmoceras sp. Plate LXL, Figs. 3$. 39. 
Specimen No. 2483 is a cephalopod shell, in form gently and arcuately 
curved, broad at the anterior, with evidence of a body-chamber overhang¬ 
ing the primary half of the shell on the concave side. The margins of 
the body chamber are large, open and somewhat reflexed. I11 section the 
wall of the septum of the body chamber is thick. The apex of the shell 
is only slightly curved, and bluntly and roundly terminated. The septal 
walls are nearly all dissolved away, and the entire cavity below the sep¬ 
tum of the bodv chamber is infilled with fine calcareous mud. containing 
small crinoid arm-ossicles, trilobite' fragments, carapaces of ostracoda, and 
polvzoal remains. The body chamber is also filled with a similar matrix. 
The outer shell-wall is in fair condition. It is black, glossy, and in a 
microscope section shows the characteristic structure of a cephalopod shell. 
In general form this fossil is suggestive of a shell-like (?) Protophrag¬ 
moceras maccoyi Foord sp. 1 
TRILOBITA. 
Genus Bronteus Goldfuss. 
(?) cf. Bronteus enormis Etheridge til. 
(?) Bronteus enormis Etheridge jnr., 1S94, Proc. Roy. Soc., Viet., Yol. VI. (N.S.), p. 1S9, PI. XI. 
Specimen No. 2495 contains a cast in reddish brown mudstone, of a 
fragment of a large trilobite pygidium, measuring 61 by 58mm. It is 
probably referable to the same form as the Delatite specimen found, by 
Mr. Sweet, and described by Mr. Etheridge in the paper referred to 
above. The densely pitted surface described by Etheridge as a character 
1. Phraymocerasarcuatum (pars) Sowerby, Murchison’s Sil. Svst.. pt. II., 1839. p. 621. pi. XI.. (ig. l 
Oion pi. X., tig. 1). Cyrtocercii ( Meloceras) m’coyi Foord. Cat. Foss. Ceph. Brit. Mus., pt. I., 1888. p. 303. 
