NATURAL HISTORY SOCIETY OP GLASGOW. 105 



Chiton, sp. ind. 



Fig. 16. — The intermediate plate referred to Chiton gcmmatus, 

 de Kon. ; Strathavon, Lanarkshire. x 2. Collection. — J. 

 Thomson. 



Fig. 17. — A plate which may possibly be the posterior of 

 Chitonellus (?) patelliformis. — (PI. II., figs. 8 and 9). x 6. 



Chiton solaeformis, Etheridge, jun. 



Fig. 18. — A complete posterior plate of this peculiar species, 

 with the apophyses preserved. x 8. Collection. — J. Bennie. 



Fig. 19. — Interior view of another example, from the same 

 collection, shewing the in-turned under surface. x 8. 



Chiton cordatus, Kirkby (?). 



Fig. 20. — Posterior plate, with the apophyses preserved, and the 

 strong dorsal ridge well shewn. x 6. Collection. — J. Smith. 



Fig. 21. — Three-quarter view of the same specimen. x 6. 



Fig. 22. — Interior of another example, shewing the concavity of 

 the dorsal ridge and the in-turned posterior margin. x 8. 

 Collection. — J. Smith. 



Chiton, sp. ind. 



Figs. 23 and 24. — Two small intermediate (?) plates, of doubtful 

 identity. x 12. Collection. — J. Smith. 



Plate II. 



Chiton GeiJdei, Etheridge, jun. 



Fig. 1. — An anterior plate exhibiting the pointed posterior end 

 and the lateral spinelets. x 8. Collection. — J. Smith. 



Fig. 2. — Interior of another example with the posterior in-curved 

 margin. x 8. Collection. — J. Smith. 



Fig. 3. — Posterior plate shewing the dorsal ridge, the posterior 

 divaricating grooves, and the overhanging spinelets. x 8. 

 Collection. — J. Smith. 



Chitonellus siibquadratus, K. & Y. (?) 



Fig. 4. — An intermediate plate, with the leaf -shaped non-ing&Kted^^^ 

 space and recurved apex. x 8. Collection. — J. Bennie^ fy^ »_y^/ S, 

 Fig. 5. — Side view of the same specimen. x 8. /QsV''0 OR ^§\v< 



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