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 fur die gesammte Mineralogie ' (Leonard's ' Zeitschrift fur 

 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 Bone's species of Mytulites a Unio. 

 Bronn, in his list, should have put " Zeit. Leonard " instead of " Jb." d = Stein- 

 kohlen-Formazion. 



1829. In the same year Honinghaus published a list of the fossils in the 

 University of Bonn (" Verzeichniss der dem Museum der Universitat, Bonn," &c, 

 ' Petrefacten Sammlung '), mentioning at p. 17 My a tellinaria, My a ventricosa 

 from Liege, My a minuta from Camerberg, (My a?) Unio acutus, Sow., from 

 Bocheim, and Mytilus crassus (Mya sulcata ?) from Werden. 



1832. A. H. Dumont, in his ' Memoire sur la Constitution geologique de la 

 Province de Liege,' published in 1832, gives at p. 356 a list of fossils from the 

 Upper Coal-measures, amongst which are — 



Locality. 

 > Bougny ; Jemeppe. 



Unio acutus, Sow. 

 Mya acuta, Honinghaus. 

 Unio subconstrictus, Sow. -\ 



Mya tellinaria, Honinghaus. > Le Val Benoit. 



„ ventricosa, „ ) 



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 pi. 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. 



