TAB. XXXIX. 



FIG. 



1. Lima pectiniformis, Schloth. A large specimen, with tubular spines (page 39). 



2. Nucula Menkei, Rocm. Great Oolite (page 44). See also Tab. XL, fig. 12. 



3. Cucullaja corallina, Lye. Cornbrash (page 43). 



4. 4 a . clathrata, Leek. Cornbrasb (page 44). 



5. Isoarca Scarburgensis, Lye. Cornbrash (page 45). 



5 a t> Portion of the surface magnified. 



6. 6 a. Trigonia elongata, Sow. Cornbrash (page 46). 



7. Leda Anglica, If Orb. Cornbrash (page 45). 



