92 M. L. de Koninek on two new Species of Chiton 
Chiton was discovered by Defrance, and described by Lamarck* 
under the name of Chiton grignoniensis, that name being derived 
from a locality long celebrated for the great number of fossils 
found there in deposits belonging to the Calcaire grossier of 
Paris, that is to say, to the middle beds of the Tertiary formation. 
In 1884 M. Conrad made known a species (C. antiquus) from 
the Tertiary formation of Alabamat. 
In 1836 M. Puzos and M. le Comte Duchastel{ found some 
remains of Chiton in the Carboniferous formation of the environs 
of Tournay ; these fragments enabled Count Miinster to establish 
a new species, which he described and figured in 1859 § under the 
name of Chiton priscus. 
This discovery was considered of some importance by palzeon- 
tologists, who were far from expecting to find species of this 
kind in palozoic strata; nevertheless, in the latter part of the 
year 1840, M. Guido Sandberger announced the probable exist- 
ence of the genus Chiton in the Devonian limestone of Villmar ||. 
In 1842 the same geologist added two new species, under the 
names of C. subgranosus and C. fasciatus, to the list which he 
then published of Devonian fossils from the same locality{]; one of 
these species is probably identical with that which M. F. Roemer 
has mistaken for Bellerophon expansus, Sow.**, and which was 
named C, cordiformis by M. Sandberger in 1845, 
In 1843 I described three new species of Chiton+t}, procured 
from the Carboniferous formation of Belgium, to which in 
1845 M. le Baron de Ryckholt added some others discovered by 
himself in the same formation{{. That savant made known at 
the same time the existence of a Chiton from the Tertiary forma- 
tion of Italy—a species we owe to the researches of M. Can- 
traine, Professor in the University of Ghent; it is described 
by him under the name of C. subapenninus in the second part of 
the ‘Malacologie Méditerranéenne et Littorale.’ It may, however, 
prove identical with that from near Turin, published in 1847 by 
M. Michelotti under the name of C. miocenicus $$. 
* Annales du Muséum, t. ii. p. 309. 
+ Morton, Syn. of Organic remains, Appendix, p. 6. 
+ This species is published by M. Deshayes in the new edition of the 
* Histoire nat. des Anim. s. Vertébres’ of Lamarck, t. vil. p. 490, 
§ Beitrage zur Petrefaktenkunde, i. p. 38. 
|| Neues Jahrb. fiir Mineral. und Geol. 1841, p. 240. 
q Ibid. 1842, p.399. These names were replaced in 1853 by those of 
C. corrugatus and sagittalis, without M. Sandberger having given a reason 
for so doing (G. & F. Sandberger, ‘ Die Versteiner. des Rhein. Schichtens. 
in Nassau,’ pp. 238, 239). 
*%* Neues Jahrb. fiir Mineral. und Geol. 1845, p. 439. 
tt Descript. des anim. fossiles du terr. carb. pp. 322, etc. 
{{ Bulletins de l’Académ. de Belg. t. xii. 2"° partie, pp. 45, ete. 
§§ Descript. des foss. du terr. mioc. de l’Italie, p. 132, pl. 16. f. 7. 
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