XOTES AND QUERIES. 
223 
some others discovered by him in the same formation. This savant made known 
at the same time the existence of a Chiton in the tertiary rocks of Italy. This 
species, the knowledge of which is due to the researches of M. Cantraiuc, 
professor at the University of Ghent, will be described by him under the 
name of C. sicbappoiinus, in the second part of his Malacologie Meditterraneenc 
et Littoralis," miless it should be identical wiT;h that of the envii-ons of Tui'in, 
published in 18^7 by M. Michelotti, under the name of C. miocenicus. 
Before the publication of Baron Ryckholt's work, Mr. King had already 
announced the presence of a Chiton found by M. Loftus in the Permian beds 
of the environs of Sunderland, and described afterwards under the name of 
C. Loftusianus. On the other hand, M. Philippi had made known two other 
species C. sicuhcs (Gray), and C. fasiciilaris (Jj^ixmdin.?,), from the tertiary forma- 
tion of Sicily. 
To all these discoveries Mr. Salter, in 18J;6, added another, not the least 
remarkable, that of a species of Chiton, in the inferior SQurian strata of Ireland. 
This author proposed on this occasion a new genus under the name of 
Heliiiinthochiton, destined to receive solely the palseozoic species ; but as the 
proposed genus is not distinguished in any essential characteristics from the 
ordinary genus Chiton, Prof, de Koniuck considers it useless; and at most it 
could only serve to designate a section from the last. 
In 1818, Mr. Searles Wood described and figured in his magnificent "Mono- 
graph of the Mollusca of the English Crag," three species of fossil«Chitons, of 
of which one was new Cstrir/illatus ; and the other two identical to species now 
living in our seas, C.fascicularis (Linn.), and C. Rissoi (Payr). 
About the same time M. Eudes Deslongchamps, to whom science is indebted 
for a great number of excellent works upon the Jurassic fossils of the environs 
of Caen, discovered in Bathonieune beds at Langrune tlic posterior or anal 
plate of a species of Chiton, which he dedicated to M. de Koninck. This was 
the first discovery of the genus in the secondary rocks. 
In 1852 M. Terguem added another Imk to the chain, which bound the palte- 
zoic Cliitons to those of our own epoch, by the discovery of another new species, 
C. Deshai/esii, in the middle lias of Thionville. 
Lastly, M. P. A. Rocmer, described and figured in 185.5, a new species of 
Chiton, C. Icemrjatus, from the upper division of the Devonian formation of the 
environs of Grund ; and figm-ed another, without naming it, and for which De 
Koniuck has proposed that of C. tumidiis. 
The following is a list of all the fossd Chitons known to this day, with the 
geological formations and localities where they have been found. 
Upper Terti.uiy. 
1. Chiton siculus, Gray. Sicily. 
2. fascicnlaris, Linn. Sicily, Sutton. 
3. Rissoi, Payrandeau. Sutton. 
4. strigillatus. Wood. Sutton. 
g C miocenicus, Michellottti. Turin. 
\ sub-appenninus. Cantr? 
6. suhcajetanus, PoU (ex fide d'Orb.). Turin. 
7. — transenna, Lea. Virginia. 
Lower Terti.vry. 
8. antiquus, Conrad. xVlabama, 
9. Grignoniensis, Lamk. Grignon. 
Great Oolite or Bathonian. 
10. Chiton Komncku, Eudes Deslonsrch. Langrune. 
Lias. 
11. Chiton Deshaysii,Tex{\Vi(im. Thionville, Permian. (See appendix on 
the additional Permian species determmcd in 1858, by A. Kirkby.) 
