210 
l 1 rom Allot. 22, Wandin Yallock, near Seville. Collected by 
A. E. Kitson, F.G.S. 
[Nos. 214-231 and 247-255 (corr. Nos.)]. 
No. of 
Specimen. 
Fossil Determination. 
2X6, 222, J 
2 53 > 2 5 5 J 
217 
218 
21 9 
220 
221, 223 
224, 23I, j 
25C 254] 
225, 227 ) 
229 J 
226 
2 28, 247, ) 
249, 252 J 
230 
231 
248 
25O 
Beyrichia Kloedeni , McCoy, and fragments of trilobites. 
A branching polyzoan or fistuliporid, indet. (casts of tubes 
in limonite). 
Fragments of trilobites, indet. 
Lindstraemia sp. Also a fistuliporid and an impression of a 
braehiopod. 
Mould of part of a crinoid column. 
Cast of Heliolites sp. 
Cephalon of Calymene sp. 
? Lindstroemia. 
Crinoid remains. 
Athyris sp. 
Cephalon of Phacops serratus, Foerste. 
Casts of rugose corals, indet. 
Phacops serratus , Foerste (pygidium). 
? Phacops (pygidium). 
Glabella of Cyphaspis, cf. howningensis , Mitchell. 
Cast of portion of a crinoid column, showing impression of 
articular surface, and cast of axial canal. 
Additional Specimens. Found at the Same Focality by the Writer 
of this Report. 
? Lidias sp. (fragment of carapace). 
C heir unis, cf. gibbus, Beyrich. 
Lithological Notes on the Impure Limestone of Wandin Yallock, 
near Seville. 
In hand specimens dark blue, often studded with small cubes of pyrites. 
The fractured surface reveals occasional fossils, as corals, brachiopods, and 
trilobites, which are well preserved in the hard rock. In the decomposing 
crust of the limestone the fossils are weathered away, leaving only their 
casts in limonite. 
In thin slices, a microscopic examination shows the rock to be fine¬ 
grained, with numerous calcitic fragments, a fair quantity of sharp quartz 
grains, and much black ? bituminous -and other opaque material. Occa¬ 
sional ossicles of crinoids occur, still showing the cleavage of calcite plates. 
Besides the calcareous particles, which form a large proportion of this 
rock, the cement which binds it is: also calcitic. A section of an ostracod 
was seen in one of the slices, resembling Macrocypris, and recalling M. 
vinei, Jones, in outline, but only one-half the length of that species. 
Other cross-sections of a more globose form of the same group of bivalved 
crustaceans were seen, as well as several fragments of braehiopod shells. 
The lines of sedimentation are distinctly seen in those thin sections 
which were cut in the right direction, and the organic remains are segre¬ 
gated along those lines. 
The age of these beds is Silurian (Yeringian). 
