108 GREY CHALK MARL. 



Localities. Hamsey, OfFham. 



12. Echinospatagus cordiformis (of Breyn.) 



An oblong, cordiforra echinite, exceedingly common in the chalk, but 

 of rare occurrence in the marl. 



LocaHties. Hamsey, Middleham, Eastbourne. 



13. Echinospatagus radiatus f Organic Remains, vol. iii. tab. iii. figs. 4 

 and 5. 



An ovate galeated echinite, very closel alhed to the species re- 

 ferred to. 



Localities. Hamsey, Middleham. 



14. Echinital spines. 



Slender muricated spines, the cucuinerince of Parkinson, are occa- 

 sionally found at Hamsey ; and I have one specimen of a palisadoe spine 

 from the same place, which possesses a spathose structure. 



TESTACE^. 



Univalves. 



15. Voluta ambigua, tab. xviii. fig. 8. 



Although the specimen here figured is merely a cast of the venter, 

 or lower volution of the shell, its characters are sufficiently obvious to 

 identify it with V. ambigua of the London clay. It is attached to a por- 

 tion of Ammonites vnrians. 



Locality. Middleham. 



16. Buccinum, tab. xviii. fig. IS. 



The cast of the last wreath of a ventricose univalve, belonging to this 

 genus, is the only example that has come under my notice. 

 Locality. Hamsey. 



17. Kostellaria Farkinsoni, tab. xviii. figs. 1, 2, 4, 5, 6, 10. 

 Subfusiform, wreaths seven or eight, convex, with longitudinal ribs, 



and nu.merous transverse striae ; outer lip dilated, armed with one styloid 

 process, beneath which is a broad truncated expansion. This species 

 occurs in the green sand of Devonshire, and is figured in the third volume 

 of " Organic Remains" plate 5, fig. 11. As it has not received a specific 



