onie O- 



PI, 7. 



Jf^^^ af// 



GASTEROPODES PECTINIBRANCHES. 



-7 BuccinideS; 8 et 9 VermeUdes; 10-13 Crèpidulides; 



14-17 PissurellideSj 



18-19 Gastéropodes CyclobranclieS; 20. Denlale. 



