PHILIPPl's COMPARATIVE TABLES OF MOLLUSCA. 15 



Near Pezzo, a couple of leagues north of Reggio and opposite 

 Messina, I have found 82 MoUusca (I.e. p. 266), and of these 15 are 

 absent from the Mediterranean and totally extinct. This amounts 

 to 18 per cent. 



About a league and a half from Reggio, at a place called Carrub- 

 bare, I found 129 species (/. c. p. 266). 





Species not now in Mediterranean. 



Species now extinct. 



65 Conchifera 



8, or 12A per cent. 

 7, „ 11 „ 



7, or 10 per cent. 

 7, „ 11 „ 





129 MoUusca 



15, „ 12 „ 



14, or 11 per cent. 





Near Monteleone, in the sand-pits east of the town, about 900 feet 

 above the sea, have been obtained 59 species {I. c. p. 267), of which 

 6 (10 per cent.) are not now in the Mediterranean, and 5 (8 J per 

 cent.) are extinct. 



Near Tarento M. Scacchi and myself have found 162 species 

 (I. c. pp. 267, 268) ; of these 9 species (about 5j per cent.) are not 

 now in the Mediterranean, and are not known in other seas. 



In the island of Ischia we found 156 species (I. c. pp. 268, 269), 

 consisting of 60 Conchifera and 2 Pteropoda, all referable to existing 

 species, one extinct Brachiopod, and 93 Gasteropoda, of which one 

 is also extinct. Of the 156 therefore, two species (about l^rd per 

 cent.) are extinct. All the existing species are found in the adja- 

 cent seas. 



On the coast at Pozzuoli, not far from Monte Nuovo, at the height 

 of 70 or 80 feet above the sea, a number of species have been ob- 

 tained and described by M. Scacchi*, and to his list I am enabled to 

 make several additions f. 



Of the whole number thus obtained, which amounts to 99, not one 

 species is extinct, and only one, Pecten medius^ found in the Red Sea, 

 is absent from the Mediterranean, even this being a doubtful case. 

 Notwithstanding this, the condition of the sea must have been consi- 

 derably different from its present state when these beds were depo- 

 sited ; for Tellina striata was then common but is now rare ; Lucina 

 spinosa was both more abundant and grew to a larger size ; Lucina 

 fragilisy now rare and hardly measuring 6 lines, then attained the 

 enormous dimensions of 14 lines, and was extremely abundant; and 

 Ostrea lamellosa, Broc, no longer obtained near Naples, existed at 

 that time, and attained a size so large that one lower valve measures 



* Autologia di Scienze Naturali, p. 46. 

 t Enumer. vol. ii. p. 269. 



