SERPULA 



Fig. 1. Serpula cochlearia, Defr. a fossil species from the Ctilcaire grossier, 

 at Orglandes, 



2. triquetra; Vermilia, Lam.; a. b. c opercula of the same of 



Various forms, magnified : these have been described as Patella;. 



3. — Vermetus; Vermetus lumbricalis, Lam.; a. its operculum. 



4. — a fossil species from Touraine, very slightly different from the 



last. 



5. glomerata. 



6. _ dentifera ? Lam. 



7. cristata. 



8. oryiata, a beautiful species attached to a Cardita. 



9. 10. Spirulcea? Park.Intr. frequent in the Chalk. Spirorbis, Lam» 



