Brits Sa A ic a 
4 
ry 
4 
. 
y 
; 
a 
4 
¥ 
4 
’ 
from the Upper Silurian ‘Wenlock Limestone’ of Dudley. 95 
16. Chiton ? cordatus, Kirkby. Durham. 
17. Chitonellus Hancockianus, Kirkby. Durham. 
distortus, Kirkby. Durham. 
19. —— antiquus, Howse,sp. Durham. 
Carboniferous Limestone. 
20. Chiton concentricus, De Kon. Visé. 
— gemmatus*, De Kon. Visé. 
, var. mosensis, De Ryckh. 
21.< —— ——, Viseticola, De Ryckh. 
—— —, legiacus, De Ryckh. 
, eburonicus, De Ryckh. 
. Chiton priscus, Minster. Tournay. 
—— nervicanus, De Ryckh. Tournay. 
turnacianus, De Ryckh. Tournay. 
—— Mempiscus, De Ryckh. Tournay. 
. — (Chitonellus), cordifer, De Kon. Tournay. 
—— thomondiensis +, Baily. County of Limerick. 
—— Burrowianus {, Kirkby. Settle, Yorkshire. 
And probably three or four other species from that locality. 
Upper Devonian. 
29. Chiton levigatus, Fr. Ad. Roemer. Grund. 
30. ——tumidus, De Kon. Grund. 
Middle Devonian. 
Chiton corrugatus, G. & F. Sandberger. Villmar. 
cordiformis, G. Sandberger. 
—— priscus, G. Sandberger ; non Miinster. 
: —— Sandbergianus, De Ryckh. 
32. Chiton sagittalis, G. § F. Sandberger. Villmar. 
——,n.sp. Plymouth (Geol. Surv. Collection). 
BSRRSSS 
31. 
the genus Chitonellus ; the one he calls Chitonellus antiquus, having pre- 
viously been mistaken by Mr. Howse for a Calyptrea, was named by him 
Calyptrea antiqua.—W. H. B. 
* M. A. d’Orbigny, in his ‘ Prodrome de Paléontologie,’ t. i. p. 127, 
has proposed to change this name into that of subgemmatus, under the 
idea that there already exists a Chiton of that name, described in 1825 by 
M. De Blainville. This, however, is an error.—L. De K. 
T In April 1859 I made known, in a paper read before the Geological 
Society of Dublin, the discovery of the plates of a Chiton of larger dimen- 
sions than any previously met with (plates belonging to several indivi- 
duals were obtained), from the Carboniferous Limestone of Lisbane; since 
then I myself collected other plates of a similar species in a cutting at 
Rathkeale, on the Limerick and Foynes Railway. This species I described 
by the above name of Chiton thomondiensis (vide Journ. of the Geol. 
Soe. Dublin, vol. viii. pt. 2. p. 167).—W. H. B. 
{ In a note to Mr. Kirkby’s paper (Journ. of the Geol. Soc. of London, 
vol. xy. p. 610), and a further communication with which I was favoured 
by him, he mentions the fact of an additional discovery by Mr. J. H. Bur- 
row, of an interesting series of plates of Chitons from the Carboniferous 
or Lower Scar Limestone of Seitle in Yorkshire. These plates he believes 
to belong to five species, which he could not identify with any of the 
Belgian species described by Baron Ryckholt and Professor De Koninck ; 
ig Oy a he has named Chiton Burrowianus, after the discoverer.— 
