Linn, names. Engl, names. 



16 pulchra smooth- rayed 



17 Damaoides interrupted 



CHAMA. 



1 angulata 



2 rostrata 



3 incrassata 



4 Australis 



CLAMP. 



angular 

 beaked 



heavy, grooved 

 Cockle 



5 crassicostata thick-ribbed 



6 pectinata comb-shaped 



Br.Mus. 



N. Holland. 



N. Holland. 



ARCA. 



ARK. 



1 Americana regular shaped Br.Mus. Bayof Campeachy. 



2 semitorta 



3 cylindrica 



4 obliquata 



5 tellinoides 



6 glacialis 



7 Braziliana 



8 nodosa 



9 Rostrum 



winged 



cylindric 



mussel-shaped 



tellen-shaped 



small brittle 



Brazilian 



tuberculated 



lioe-shaped 



Cumana. 



North Sea. 



Brazil. 



