30 CARBONICOLA, ANTHRACOMYA, AND NATADITES. 
(Volpersdorf, op. supra cit.). This shell occurs in the Coal-measures of 
Lancashire. 
1870. In tne ‘ Geological Magazine’ for 1870 is a paper by Professor Rupert 
Jones on some “ Entomostraca from the Coal-measures of South Wales.” At p. 216 
he notices some Anthracomye from the Ebbw Valley, and refers to the compressed 
Anthracomye in the Ardwick beds described by Phillips (op. supra cit.), and 
figures (figs. 3 and 18, pl. ix) are given. 
1891. This author also refers generally to the Coal-measure bivalves in his 
Address to the Geological Section of the British Association at Cardiff, in 1891. 
At p. 17 he remarks, “‘ There is great probability of these not being truly marine. 
They may have lived in the brackish waters of lagoons and creeks, in the black, 
muddy swamps, having some communication with the sea, and often or 
occasionally inundated with salt water.” 
1871. Messrs. Young and Armstrong brought out their work ‘ On the Carbo- 
niferous Fossils of the West of Scotland, for the Use of the British Association 
Meeting at Glasgow, 1871.’ They give lists and localities, but describe no new 
forms. Their views as to the fresh-water habitat of the shells I have quoted above 
(p. 4). 
1871. In 1871 Ferd. Stoliczka, in ‘ Paleeontologica Indica,’ vol. viii, p. 84, 
places Anthracosia under Savicava, and writes, ‘‘ Prof. King advocates the idea 
that Anthracosia is a genus of Unionide, but there can be little doubt as to its 
close relation to Notomya, and it is even difficult to distinguish some of the 
species generically. The ligamental area of Anthracosia much more recalls that 
of Panopxa and Oyrtodaria than that of any known Unionide, and as Salter 
distinctly asserts that it is a marine or brackish water shell, I think its classifica- 
tion in this place (Savicava) may be the more correct one.” 
1873. The work was carried on in Scotland by Mr. Robert Etheridge, jun., 
his first paper on the subject appearing in the Appendix to the ‘ Memoirs of the 
Geological Survey of Scotland: Explanation of Sheet 23.’ Here a stratigraphical 
list of the localities and beds containing Coal-measure Lamellibranchs is given, and 
a note is appended (p. 104) on the burrowing habits and affinities of Anthracosia ; 
he says, “Specimens of A. robusta and A. acuta were obtained resting on their 
ventral margins at right angles to the bedding of the entombing matrix; but none 
were obtained in a vertical position burrowing, as we find is the case with recent 
Mya truncata.” 
1875. In the ‘ Annals and Magazine of Natural History,’ series 4, vol. xv, 1875, 
p. 427, ‘‘ Notes on Carboniferous Lamellibranchiata,” he gives the bibliography of 
Myalina crassa (Mytilus crassus of Fleming), and discusses its generic relations, 
giving some excellent plates. 
1877. In the ‘ Geological Magazine,’ new series, dec. 2, vol. iv, June, 1877, 
