fitton's section at atherfield, 301 



No. 9. Sandy Clay. 



Panopaea plicata, Sow. Nucula spathulata, Forbes. 



fPholadomya Martini, Forbes. Trigonia rudis, d Orb. 



Tellina ? {incequalis ?) caudata, Agass, 



fGryphaea harpa, Goldf. f Astacus Vectensis. 



sinuata, Sow. Mytilus aequalis, Sow. 



Anomia radiata, Sow. Pinna Robinaldina, d'Orb. 



*Avicula depressa?, Forbes. Venus Vectensis, Forbes. 



Rostellaria Robinaldina ?, d^Orb. Thetis minor, Sow. 



Vermetus polygonalis. Sow. Gervillia Forbesiana, d^Orb. 

 fAstarte numismalis, d'Orb. linguloides, Forbes. 



transversa {obovata). fLima (species). 



Area exaltata? (young), Zeym. Pecten orbicularis, Sow. 



fNucula scapba, d'Orb. Ammonites Deshayesii, Leym. 



No. 10. Clay. Uppermost Bed of the Crackers Group, 



Panopaea plicata. Sow. fGervillia linguloides, Forbes. 



Corbula striatula, Sow. fLima Cottaldina, d Orb. {elongata, 



Cardium Cornuelianum, d^Orb. Sow.) 



Isocardia ornata, Forbes. Rostellaria Robinaldina, d' Orb. 



tArca Raulini. f glabra, Forbes. 



fNucula spathulata, Forbes. fSerpula (Vermetus) polygonalis, Sow. 



Venus Vectensis, Forbes. 



Groups IV. to XIII. Nos. 11 to 45. — This central portion of the 

 series consists of green and brownish sands, alternating with clay, one 

 group of which, about the middle (Nos. 24 and 25), deserves especial 

 notice. All the beds are fossiliferous ; many of them including 

 nodules, containing as a nucleus, masses of shells, or sometimes a 

 single Crioceras or Ammonite of great size. The uppermost beds of 

 this division contain many of the same species as the very lowest 

 group 1 and 2, in this respect differing much from the sandy strata 

 immediately above, which on this coast have afforded scarcely any 

 fossils. But this great difference is only local. 



Two principal groups (IV. and X.) of this division coni2iin Gryphcea 

 sinuata in great numbers ; the latter being here the upper limit in 

 the range of that species. But scattered shells of Gryphsea appear 

 throughout the lower beds of this section ; and near Shanklin two or 

 more additional ranges of Gryphaea have been found by Captain Ib- 

 betson and Mr. Forbes, distinctly above the beds which there repre- 

 sent Nos. 36 and 371- 



Ten or more ranges of nodules also make their appearance here 

 between 17 and 35, containing Crioceras, of which one species only 

 {C.Bowerbankii) has been hitherto described; nor have the beds which 

 contain these fossils been yet examined with sufficient attention. 



The genus hitherto called Scaphites also occurs in this part of the 

 division, chiefly in No. 15. 



The cliffs here are cut through by three Chines {Whale, Ladder, 

 and Walpen Chines) ; they are in some places mural, especially be- 

 tween the Crackers and Whale Chine, and on the east of Walpen. 

 Two of the principal heights are Atherfield High-Cliff, about 129 feet 

 above its base, and Brown! s Down, about 169 feet. Walpen High 

 Cliff, the chief prominence on the coast west of Black-Gang Chine, is 

 about 184 feet above its base on the sea-shore. 



X Report of British Association, 1844. See hereafter, p. 317-318. 



VOL. III. PART I. Y 



