io6 BuiXETiN 35 ^54 



Page 196 



CI. concavus to the species. Among my original .speci- 

 mens from Anguilla are some which approach more 

 nearly to the figure of CI. ellipticus given by Michelin 

 than the example figured by Cotteau does ; and I am not 

 at all sure whether upon an examination of a large series 

 my first determination may not ultimately be adopted. 



7. Sismondia a?itillarnm, Cotteau. 



Cotteau, Bchinides tert., p. 17, pi. iii., f. 1 — 4. 

 Eocene, S. Barts. 



8. Sismondia anguillcs, Cotteau. 



Cotteau, op. cit., p. 18, pi. iii., f. 5 — 8. 

 Miocene, Anguilla. 



9. Echinolampas ovumserpentis, Guppy. 



Journ. Geol. Soc, vol. xxii., p. 300, pi. xix., f. 4 — 6. 



Cotteau, Echinid. tert., p. 20, pi. iii., f. 13 — 21. 

 I am inclined to regard Ech. antillarum, Cotteau 

 (p. 19, pi. iii , f. 9 — 12), as a form of this species. 

 Eocene, S. Barts (also Trinidad). 



10. Echinolampas clevei, Cotteau. 



Cotteau, Echinid. tert., p. 23, pi. iv.. f. 1 — 5. 

 Apparently a very distinct form. Eocene, S. Barts. 



11. Echinolampas ly coper sicus, Guppy. 



Journ. Geol. Soc, vol. xxii., p. 300, pi. xix., f. 8. 



Cotteau, Echinid. tert., pi. iii., f. 22 — 26. 

 I regard Ech. anguilla (Cotteau, p. 24, pi. iv., f. 6 — 8) 

 as merely an unusual form of this species. 

 Miocene, Anguilla. 



12. Echinolampas semiorbis, Guppy. 



Journ. Geol. Soc, vol. xxii., p. 299, pi. xix, f. 7. 



Cotteau, Echinid. tert., p. 24, pi. v., f. 1, 2 ; and 

 pi. vi., f. 1. Miocene, Anguilla. 



