PLATE VI. 

 Lima (continued). 



Figs. 



1. L. (ManteUum) inte)-lineata, Jukes-Browne. Cambridge Greensand, 

 Cambridge, a, right valve ; h, ventral part of left valve X -i. (P. •>2.) 



2 — 4. L. (ManteUum) intermedia, d'Orb. Rye Hill Sands, AVarminster. 

 (P. 33.) 



2. York Museum, a, right valve ; 6, antero- ventral pent x 4. 



3. Brighton Museum. Left valve. 



4. Sedgwick Museum, a, right valve; 6, antero- dorsal view; c, posterior ear of 



right valve x 4. 



5 — 7. I, (Mantelhim) elongata, Sow. Chalk Marl, Folkestone. (P. 34.) 



5. Mr. J. F. Walker's Collection. Right valve. 



6. Sedgwick Museum, rt, left valve ; 6, antero-dorsal view; r, mid-ventral portion 



X 3. 



7. Sedgwick Museum, o, right valve; b, autero-ventral part x 8. 



8, 9. L. (ManteUum) ehncjata, var. echinafa, Eth. Sedgwick Museum. (P. 3G.) 



8. Tottemhoe Stone, Burwell. Left valve. One of the types. 



9. n. siihijlohosus 7.Lme,'Burwe\'\. n, left valve; /*, antero-ventral portion x 4; c, 



posterior portion x 4. 



10 — 12. L. (ManteUum) cantabrigiensis, Woods. Sedgwick Museum. (P. 37.) 



10. The type. Cambridge Greensand. a, left valve ; h, posterior portion x G. 



11. Antero-ventral portion of left valve X 6. 



12. Lower Chalk, Burwell. Right valve x l\. 



13. L. (Mntitdliim) liritannica, Woods. Zone of Micrastcr cor-anguinum, 

 Seaford. Mr. R. M. Brydone's Collection, a, right valve; h, antero- 

 dorsal view X 1^ ; c, portion at antero-ventral margin X ; d, por- 

 tion at postero-ventral margin X G. (P. "iS.) 



14,15. Tj. (ManteUum) Beichenhachi, Geinitz. Sedgwick Museum, Cambridge. 

 (P. 39.) 



14. Ccuomanian Sandstone, Wilmington, a, left valve ; b, ant«ro-dorsal view. 



15. Chloritic Marl, Chard. Right valve. 



IC). L. (MaufrUum), sp. Chloritic ]\Iarl, Cliardstock. Museum of Practical 

 Geology, No. 7896. a, left valve ; h, postero-ventral portion X 6. 

 (P. 40.) 



17. L. (Ctenoides) rapa, iVOrh. Upper Greensand, Haldon. British Museum, 

 No. L 15612. a, right valve ; b, median portion a short distance above 

 the ventral margin X 3; <;, portion near the anterior margin X 5. 

 (P. 40.) 



