lAOCEKA.MlS. 327 



I.Jiifiis-, ]\raiitfll ( Fiu'. 7<)), from tlio Uiipcr (Mialk near Brighton ; in tlie Britisli 

 Museiini, No. -"iSJ-S. 



T. I'rouguiarti, Sowerby, 182o (Fig. 70). I;Ocality and hoi'i/on unknown ; in 

 tlie British Mnsevnn, Xo. -l-o2(j5. 



The small specimens from the /one of lilii/iiclnnii'llii C'liriri-l near Camljridge, 

 figured by Etlieridge as Iiuiccr((iiinH jiroltlein<ificiif<, ari' in the Museum of Practical 

 Geology (Xos. 2 1 230-2 1 232). 



Distfihidioii. — /. fjiDiiiin-J.-l ranges from the zone of IllDjiirlniiirlhi Cavieri to the 

 zone of ?\[icraf<tpr ciir-mujui iiniu} 



Zone of Tilij/itchonclhi I'm-icri -. St. Catherine's Ilill (Winchester), the Isle of 

 Wight, Cuxton, Bnrhani, Dunton Green, the Sussex coast, Dover, Hitchin, Fovil- 

 bourn near Cambridge, the Yorkshire coast. 



Zone of 'rprrJii-iifiilimi lufn ; Hooken (South Devon), the Isle of Wight, Cuxton, 

 Blue Bell Hill (Bui-hani), Dunton Green, Kenlev, Westerham, Lewes, the Sussex 

 coast, Holborough near Rochester, Dover, Guilford Colliery (Coldred near Dover), 

 Hitchin, Koyston, the Yorkshire coast. 



Zone of Ifnh(sf('r j}l(nnis .- The South Devon and Dorset coasts, the Isle 

 of Wight, Winchester, Ilomington (Salisbury), Cuxton, Borstal, Whyteleaf 

 (AV;irlinghain), the Sussex coast, Dover, Newmarket, Swaffham (Norfolk), 

 Westacre, Xarborongh, the Yorkshire coast. Chalk Rock of Cuckhamsley. 



Zone of Micraster cor-tcstaiVuiariinn : The South Devon and Dorset coasts, the 

 Isle of Wight, Borstal Fort, Borstal Manor pit, Chatham, Lewes, the Sussex coast, 

 Dover, Wharram Percy, the Yorkshire coast. 



Zone of Minnisfrr cor-anguinnm : The Dorset coast, the Isle of Wight, Camp 

 Hill (Sali-sbury), ^licheldever, Harefield, Southeiam, the Sussex coast, St. 

 Margaret's, Thanet, the Yoi-kshire coast. 



Senonian of Ifaldon. 



iNOCERAAirs ixvoi.iTrs, Soiri'rhi/, 1828. 'i'ext-figs. 88 — 94. 



1828. Inoceramus involutus, .7. tJi- C. Soirerhy. Miu. Couch., vol. vi, p. 16i), 



pi. dlxxxiii, figs. 1 — 3. 

 1841. — — F. A. lii'iiiii-. ])ie Versteiu. d. uord-deutscli. 



Kreidegeb., p. 61. 

 1846. — — A. <rOrhS,jnij. Pal. Franc. Terr. Crct., vol. iii, 



p. 520, pi. ecccxiii, figs. 1 — 3. 

 — — Lamakckii, d'Oihitjiiij. Ibid., p. 518, pi. in-cxii. 



1850. — INVOLUTUS, d'Orbigny. Prodr. de Pal., vol. ii, p. 250. 



' Some authors have recorded this species \'vi>nt thezouesof ifdi-fiiiiillfs iesliiiJInartiis, 4^cliiiocamax 

 quadfatug and Bilciiniilelln iiiiirruiKilii, but I have not sufficient evidence to confirm these records. 



