188 



MEDITERRANEAN PROVINCE. 



A like system of representation is to be traced, 

 as will be seen, amongst the forms found in the older 

 sedimentary deposits. 



Reference has been already made to the species 

 of Testacea common to the Mediterranean and our 

 own seas. In the bathymetrical distribution of spe- 

 cies, those which have the most extensive range in 

 depth have also a very wide geographical distribu- 

 tion. Thirty-eight species range through four out of 

 the eight regions of the iEgean. Of these at least 

 twenty-one are British, and hence Ed. Forbes ar- 

 rived at the general inference that " the extent of the 

 range of a species in depth is correspondent with its 

 geographical distribution'' 



The distribution of Celtic forms in the several 

 iEgean zones has been represented in the following 

 tabular form : — 







i. 



ii. 



iii. 



iv. 



V. 



vi. 



vii. 



viii. 



Chitons . 





1 











1 



1 



1 



1 







Patelliform univalves 









1 



2 



2 



2 



2 



2 







Dentalia 





1 



1 



























Spiral univalves, Holo- 

 stomata 



< 



12 



9 



13 



16 



14 



11 



8 



4 



Spiral univalves, Siplio- 

 nostomata . 



s 



4 



5 



7 



8 



9 



6 



5 



2 



Pteropods and Nucleo- 

 branchs 



i 





























Bracliiopods . 

 Lamellibranchs 







 1.6 





 25 



28 







39 



33 





 19 





 11 





 7 



Total . 





34 



41 



50 



66 



59 



39 



27 



13 



Percentage 





21 



36 



45 



43 



40 



35 



36 



20 



