14 CARBONICOLA, ANTHRACOMYA, AND NAIADITES. 
Martin’s shell to this form. He also quotes Mytilus crassus, referring to his 
previous note on this form, as Modiolus, sp., in the ‘ Edinburgh Philosophical 
Journal,’ vol. xii, 1825, p. 246. 
1829. H. Bronn, “ Verzeichniss der im Heidelberger Mineralien Komptoir,” 
&c. In‘ Taschenbuch fiir die gesammte Mineralogie’ (Leonard’s ‘ Zeitschrift fiir 
Mineralogie’), Jahrgang 1829, Bd. i, p. 76, 8vo., Heidelberg, 1829, is the 
following : 
“363. ? Unio carbonarius, n.; ? Mytulites carbonarius, d.” 
That is to say, Bronn, in 1829, made Boné’s species of Mytulites a Umo. 
Bronn, in his list, should have put “‘ Zeit. Leonard ”’ instead of “ Jb.” d = Stein- 
kohlen-Formazion. 
1829. In the same year Héninghaus published a list of the fossils in the 
University of Bonn (“ Verzeichniss der dem Museum der Universitiit, Bonn,” &c., 
‘Petrefacten Sammlung’), mentioning at p. 17 Mya tellinaria, Mya ventricosa 
from Liége, Mya minuta from Camerberg, (Mya?) Unio acutus, Sow., from 
Bocheim, and Mytilus crassus (Mya sulcata ?) from Werden. 
1832. A. H. Dumont, in his ‘Mémoire sur la Constitution géologique de la 
Province de Liége,’ published in 1832, gives at p. 356 a list of fossils from the 
Upper Coal-measures, amongst which are— 
Locality. 
Unio acutus, Sow. 
Mya acuta, Honinghaus. 
Unio subconstrictus, Sow. 
Mya tellinaria, Honinghaus. Le Val Benoit. 
» ventricosa, ss 
; Bougny ; Jemeppe. 
1834. Mammatt published his ‘Geological Facts of the Ashby-de-la-Zouch 
Coal-field’ in 1834, and alluded to beds full of Mya ovalis, figuring small portions 
and crushed shells on several plates; but none can be recognised owing to their 
fragmentary condition. 
1835. Hibbert, in 1835, published his memoir on the Burdiehouse Limestone, 
figuring without description a shell from that bed as Unio nuciformis, of which, 
unfortunately, all trace has been lost. 
1836. In 1836 W. C. Williamson alludes in the ‘ Philosophical Magazine,’ 
vol. ix, p. 351, to a shell from the Spirorbis Limestone of Pendlebury as Unio 
Phillipsii, and, giving a detailed description but no figures, refers to Hibbert’s 
work, and suggests the similarity of the two shells. 
1838. In 1838 Dr. W. Rhind, of Edinburgh, issued his little book ‘ The Age 
of the Earth,’ figuring on pl. ii, c,d, e, f, Unios from the Coal-shale of Polmont, 
Falkirk; figs. a and b, Axinus Pentlandicus (probably Schizodus), and fig. g, a 
modioliform shell, all from Woodhall, Water of Leith. 
