1859.] 



AVRIGI1T INFERIOR. OOLITE. 



23 



I have determined the following fossils from this mollusca-bed 

 (lower shelly bed), specimens of most of which are in my own 

 cabinet, and in the fine collection in the Museum of the Bristol Phi- 

 losophical Institution, and likewise in that of Dr. Wright. 



Fossils of No. 



Cirrus Leachii. Sow. 



nodosus, Sow. 



Littorina ornata, Sow. 



, sp. nov. 



Nerimea Anglica, d' Orb. 

 Pleurotomaria armata, Sow. 



abbreviate, Sow. 



elongata, Sow. 



fasciata, Sow. 



ornata. Sow. 



punctata, -Sow. 



sulcata, Sow. 



Trochus, sp. 



Monodonta laevigata, Sow. 

 Alaria Phillipsi, Lye. 

 Chemnitzia lineata, Sow. 



Pectcn lens, Sow. 



barbatus, Sow. 



Area elongata, Pratt. 



Macrodon Hirsonensis, d'Archiac, 



Cueullaea oblonga, Sow. 



cucullata, Goldf. 



Astarte elegans, Sow. 



1. Iron-shot Shelly Bed. 



Astarte obliqua, Desk. 



subtrigona, Miinst. 



orbicularis, Sow. 



excavate, Sow. 



Homomya crassiuscula, Lye. 

 Ostrea flabelloides, Lamh. 

 Mytilus, sp. 

 Pleuromya donacina, Ag. 



tenuistriata, Ag. 



elongata, Ag. 



Myopsis Jurassi, Brong. sp. 

 Opis trigonalis, Sow. 



lunulatus, Sow. 



Pholadomya fidicula, Sow. 



ovulum, Ag. 



Heraulti, Ag. 



Tancredia donaciformis, Lye. 



Lucina, sp. 



Unicardium gibbosum, Lye. 



Sphaera Madridii, d'Areh. 



Modiola Sowerbyii, d' Orb. (plicata, 



Sow.). 

 Hinnites tuberculosa, Goldf. 



Ammonite-bed (No. 2). — The chief feature observable in this re- 

 markable stratum is the persistency of certain species of Ammonites, 

 most of which do not pass upwards into the higher strata. Patho- 

 logically, this and the underlying shelly bed closely resemble each 

 other. This bed measures about 3 feet ; but it is irregular, varying 

 from 2 to 3 feet in thickness. The following list has been obtained 

 from this Ammonite-zone : — 



Fossils of No. 2. 

 Ammonites Blagdeni, Sow. 



Braikenridgii, Sow. 



Brocchii, Sow. 



dimorphus, d" Orb. 



Humpliricsiamis, Sow. 



hcviuflculus, Sow. 



Sowerbyi, Mill. 



DnndnenBu, Worthy. 



Brongniarti, Sow. (non d' Orb.). 



Orbignianus, H'r. (Brongniarti, 



tTOrl,.). 



Eudcsianus, (T Orb. 



concavus, . s 



Nautilus c-xravatOB, Sow. 



lineatus, Sow. 



Belomnitefl caiinlieulntus, Schhfh. 



Ammonite-bed. 

 Belemnites clliptieus, Mill. 

 sulcatus, Mill. 



Monodonta laevigata, Sow. 

 Littorina ornata, &>»•. 

 \irin;i'.i Anglirn. (V Orb. 

 Turbo Milleri, Wr., Q. -]• 

 Pleurotomaria elongata, Bow. 



punctata. Sow. 



Lima peotinifbnnis, Schtoth. 

 Peofeen lens, Sow. 



Modiola Sowerbjii, d' Orb. (plicnta, 

 Sou:). 



nii'i -llntn, Phil. 



Opis trigonalis, 6 



similis. Desk, 



Tt-rvKratiiln Ktlicridgii, DiKtd*. 



Oonehifera-beda (Nos. '■'< and l ). — Suooeeding these ferruginous or 

 iron-shot beds, *re have n. succession of irregular Bend-oolitic deposits, 



