io6 Bulletin 35 254 
Page ig6 
Cl. concavus to the species. Among my original speci- 
mens from Anguilla are some which approach more 
nearl}' to the figure of Cl. ellipticus given bj’ 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 ma}^ not ultimatel}' be adopted. 
7. Sismondia antillarum, Cotteau. 
Cotteau, Echinides tert., p. 17, pi. iii., f. i — 4. 
Eocene, S. Barts. 
8. Sismondia anguillcE, Cotteau. 
Cotteau, op. cit., p. 18, pi. iii., f. 5- — 8. 
Miocene, Anguilla. 
9. Echinolampas ovumserpentis, Gupp3L 
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. i — 5. 
Apparently a ver\' distinct form. Eocene, S. Barts. 
11. Echinola^npas ly coper sicris, Guppj'. 
Journ. Geol. Soc., vol. xxii., p. 300, pi. xix., f. 8. 
Cotteau, Echinid. tert., pi. iii., f. 22 — 26. 
I regard Ech. aiigtiillce (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. i, 2 ; and 
pi. vi., f. I. Miocene, Anguilla. 
