328 



RELATIVE AGES OF THE CRAG 



Lucina, n. s. allied to Tellina rotundata, Montagu, 



25*Donax trunculus, Montagu. 



*?AsxARTEj9&ma, Min. Con. (very near Ast. borealis). 



* compressa, Mont, (including Ast. angulata 



of Woodward's list), 



n. s. allied to Ast. obliquata, Min. Con... 



oblonga, Min. Con 



30*Cyprina islandiea 



Cyther&a, n. s. allied to C. lineata, Min. Con. ... 

 *Venus? paphia, Mont, including Astarte ovalis and 



Ast. antiquata of Woodward's list, 



Cardita, n. s. a small species, 



scalaris, Min. Con. 



35 Cardium edulinum, Min. Con 



•. edule, (Car. obliquum of Woodward's list) 



#Pectunculus pilosus, Lam. (variabilis, Min. Con. 



Nucula, n. s. allied to Nuc. margaritacea, 



— i Cobboldice, Min. Con 



40 allied to Nuc. oblonga, Min. Con. 



* PModiola papuana, Lam. (M. vulgaris of authors) 

 One valve only from Postwick, near Norwich. 

 Recent species inhabits Norwegian seas. 

 *Mytilus edulis, (including M. alee formis, Min. Con 



and M. antiquorum of Woodward's list), 



Pecten plebeius, same as P. sulcatus and P. recon- 



ditus, Min. Con 



* obsoletus, Min. Con , 



45 princeps, Min. Con , 



*?Anomia striata ? 



.*? ephippiumP 



undulata,. 



*Terebratula psittacea, Lam. Recent species in- 

 habits Newfoundland. 

 50 Patella, n. s. allied to P. virginea, including P. 

 parvula, Woodward, , 



*Calyptr.ea Sinensis, Mont. (Infundibulum clype 

 um, Woodward). 



*Bulla obtusa, Mont. (Bulla minuta, Woodward). 



*m cylindracea, Mont. , 



-allied to B. millium. 



55 Auricula pyramidalis, Min. Con 



Ringic ula ventricosa, Min. Con 



* PNatica glaucinoides, perhaps same as Nat. glaucina 



n. s. resembling in shape Paludina solida, 



Say, 



hemiclausa, Min. Con 



60 Velutina similis, (Sigaretus similis, Woodward). 



, — allied to V. laevigata. 



Tornatella, like T. fiammea of E. Indian seas, 

 but smaller; (Actceon Noce, Min. Con.) ... 

 *Scalaria grcenlandica, (Sc. similis, Min. Con.) 



Recent species inhabits Greenland, 



* clathratulus, (Sea. minuta, Min. Con.) 



65*?Trochus nitens, (T. tumidus P) 



* ? similis, ( T. zizyphinus P) 



Red Crag. 



Cor. Crag. 



