Gen. Conchyliolithus. Fam. Turbinit^. Helicit.e. 
Breynian Orihoceratite. \ 
Sedes : strata vetusta, marmorea, et schistosa. 
At Ashford, in the black marble, and at Buxton, In shale. 
Obs. We have discovered several other species of Nautilitx in this county. Two of these belong 
to the present division of Orthoceratitx — one is a Belemnites — the rest Ammonitar and involuted 
iVitMttlit.i’— None of them are liable to be confounded with the species described in this volume. 
* d. 2. * Turbinit®. 
constrictus, 34. Conch. Turbinites? conico-turritus l®vis, anfractibus superne subco- 
arctatis : cingulo crenato marginali. 
Tall. 38. Tig. 3. 
Constricted Turbinite. 
Sedes : strata vetusta, marmorea. 
Tideswell,. Buxton, Huclow ; but not common. 
specimen. 
b. S. cingulo marginal! obsoleto. 
Obs. S. b. with the marginal belt indistinct, is found near Buxton, This variety of structure 
is evidently accidental ; occasioned by the roughness of the constituent limestone, which render* 
she crenations at the edge of the volutions scarcely distinguishable. 
* c. 2. * Helicit®. 
auricularis 35. Conch. Helidtes? umbilicatus auriformis subdepressus subths concavus, 
ambitu subacuto, apertura ovali, anfractibus duobus ; superiore miiiti- 
tulo lateral!. 
Tab. 40. Tig. 3, 4. 
Tar-like Helicite. 
Sedes : strata vetusta, marmorea. 
Bakewell. Rare. 
Catillus. 36. Conch. Helidtes depressus subtus planus, supra concavus contractior, 
ambitu obtuso lato obliquo ; marginibus acutis. 
Tab. 7. Tig. 1, 2. 
