APPKNDIX. T 



Obs. Three of tlic ribs are nuich lai-^rr and 

 broader than the rcinainiiiu nine, and tlie jxotcrior 

 part of the shell is rather flattened. 



400. CARDITA INCRASSATUS. 



C. testa oblonga, antice brevi, costis 16 incrassatis, 

 rotundatis, crenatis; interstitiis angustis. 



Obs. There are two specimens of this shell, 

 which do not accord with any of the representations 

 of Cardita sulcatus, though it is commonly known 

 by the name of Cluima antiquatu. 



531. PINNA SERRATA. 



P. test^ tenui, subpellucida, cornea, costis radianti- 



bus creberrimis, concinne et minutissime murica- 



tis, latere altero acutissimo, altero retuso, niar- 



gine cardinis recto, in utriiquc valva serrifero. 



Obs. A most elegant shell, somewhat resembling 



P. pectinata in appearance; its most remarkable 



character is its double row of spines on the hinge 



margin. 



531«. PINNA ATRO-PURPUREA. 



P. test.l atro-purpurea, costis radiantibus, muticis, 

 distautibus ; margine cardinali longitudinem late- 

 ralis ajquante latere postico arcuato. 



692. CHITON LATUS. 



C. test4 lata, valvis arcuatis, Ia?vibu,s, crcberrime 

 sulcatis, olivaceis, albido-punctulatis. 

 Obs. The locality is not known. 



693. CHITON RUGULOSUS. 



C. testa, val varum parte mediand longitudinalitcr 

 rugulosft, latcrali concinuc radiuta. 



