[NOCERAMUS. 327 



Llatus, Mantel] (Fig. 76), from the Upper Chalk near Brighton ; in the British 

 Museum, No. 5848. 



I. Brongniarti, Sowerby, 182:3 (Fig. 70). Locality and horizon unknown ; in 

 the British Museum, No. 43205. 



The small specimens from the zone of Rhynchonella Cuvieri near Cambridge, 

 figured by Btheridge as Inoceramus problematicus, are in the Museum of Practical 

 Geology (Nos. 212:30—21232). 



Distribution. — /. Lamarcld ranges from the zone of Rhynchonella Cuvieri to the 

 zone of Micraster cor-anguinum} 



Zone oi Rhynchonella Cuvieri: St. Catherine's Hill (Winchester), the Isle of 

 Wight, Cuxton, Burham, Dunton Green, the Sussex coast, Dover, Hitchin, Foul- 

 bourn near Cambridge, the Yorkshire coast. 



Zone of Terebratulina lata : Hooken (South Devon), the Isle of Wight, Cuxton, 

 Bine Bell Hill (Burham), Dunton Green, Kenley, Westerham, Lewes, the Sussex 

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

 Hitchin, Royston, the Yorkshire coast. 



Zone of Ilolaster phi mis : The South Devon and Dorset coasts, the Isle 

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

 (Warlingham), the Sussex coast, Dover, Newmarket, Swaffham (Norfolk), 

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



Zone of Micraster cor-testudinarium .- 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 Micraster cor-anguinum : The Dorset coast, the Isle of Wight, Camp 

 Hill (Salisbury), Micheldever, Harefield, Southeram, the Sussex coast, St. 

 Margaret's, Thanet, the Yorkshire coast. 



Senonian of Haldon. 



Inoceramus invoi/utcs, Sowerby, 1828. Text-figs. 88 — 94. 



1828. Inoceramus involutus, J. de C. Sowerby. Min. Couch., vol. vi, p. 160, 



pi. dlxxxiii, figs. 1 — 3. 

 1841. — F, A. Rimer. Die Verstein. d. nord-deutsch. 



Kreidegeb., p. 61. 

 Ig4,j — A. d'Orbigny. Pal. Franc. Terr. Cret., vol. iii, 



p. 520, pi. ccccxiii, figs. 1 — 3. 

 Lamaeckii, d'Orbigny. Ibid., p. 518, pi. ccccxii. 

 1850. involutus, d'Orbigny. Prodr. de Pa'., vol. ii, p. 250. 



1 Some authors have recorded this species from the zones of Marsupites testudinarius, Actinocamax 

 quadratus and Belemnitella mucronala, but I have not sufficient evidence to confirm these records. 



