30 



PROCEEDINGS OE THE GEOLOGICAL SOCIETY. 



[Apr. 6, 



Turbo elaborates, Lye. Sf Mor. 



Phillipsii, Lye. Sf Mor. 



Trochus monilitectus, Phil. 



Leckenbii, Lye. Sf Mor. 



Phasianella striata, Sow. 

 Eulima laevigata, Lye. Sf Mor. 

 Cerithiuru Beanii, Lye. 8f Mor. 



gemniatum, Lye. Sf Mor. 



Cliemiritzia Scarburgensis, Lye. Sf Mor. 



vetusta, Phil. 



Natica adducta, Phil. 



cincta, Lye. 8f Mor. 



Alaria Phillipsii, Lye. Sf Mor. 

 Actaeonina glabra, Phil. 



Ostrea flabelloides, Lamk. 



, a large flat species. 



Lima, sp. n. A very fine-ribbed shell. 

 Placunopsis inaequalis, Phil. sp. 

 Pecten Saturnus, d' Orb. 



demissus, Phil. 



Lima duplicata, Sow. 



Avicula Muensteri ? Lye. Sf Mor. 



ornata, Gtoldf. 



Monotis Braamburensis, Phil. sp. 

 G-ervillia acuta, Sow. 

 Pteropema plana, Lye. 

 Perna rugosa, Goldf. 

 — — mytiloides, Goldf. 

 Pinna cuneata, Phil. 



cancellata, Lye. Sf Mor. (Junior 



of P. cuneata). 

 Modiola ungulata, Young &f Bird. 



imbricata, Sow. 



cuneata, Sow. (Dwarfed var.) 



Mytilus pulcnerrimus, Roemer. 



No. 11. Forms the uppermost bed of the Lower sandstones and 

 shales, assuming that the Grey limestone is to be regarded as the 

 frontier-bed between these two great arenaceous lacustrine deposits 

 of the Inferior Oolite of Yorkshire. 



The rock beneath the grey limestone is a greenish laminated 

 sandstone, divided by joints, and beautifully intersected by thin car- 

 bonaceous seams, with the stems and leaves of plants, and much 

 dark carbonaceous matter in the lower layers of the bed. 6 feet 

 6 inches. It rests on — 



No. 12. A dark carbonaceous shale. 1 foot. 



No. 13. A dark grey clay. 4 feet. 



No. 14. A greyish sandstone above, with greenish clays below, 

 full of dark carbonaceous matter. 2 feet. 



No. 15. Green and grey sandy clays, full of the fragments of 

 plants, with portions of the stems of Cycadece. In this bed, my friend 

 John Leckenby, Esq., collected several specimens of Unio distortus. 

 I saw impressions of shells, but found none. It measures 3 feet. 



No. 16. Black shaly bed, full of carbonaceous matter, with seams 

 of imperfect coal and vegetable remains. 1 foot. 



No. 17. Finely laminated grey shales and sandstones, with car- 

 bonaceous laminae. 1 foot 6 inches. 



Cucullaea cancellata, Phil. 



reticulata, Phil. 



Trigonia costata (var. pulla), Sow. 



signata, Ag. (T. decor ata, Lye.) 



Cyprina, sp. n. 



Cardium ? semiglabrum, Phil. 

 Lucina despecta, Phil. 

 Astarte minima, Phil. 



elegans, Phil., not Sow. 



Isocardia nitida, Phil. 



cordata, Buckm. 



Unicardium depressum, Phil. sp. 

 Quenstedtia laevigata, Phil. sp. 

 Myacites calceiformis, Phil. 



Beanii, Lye. Sf Mor. 



Goldfussii, Lye. 



Goniomya V-scripta ? Sow. 

 Grresslya peregrina, Phil. 

 Pholadomya Heraulti, Ag. 

 Homomya crassiuscula, Lye. Sf Mor. 

 Thracia, sp. n. 



Pholas pulchralis, Lye. 8f Mor. 

 Mya ? aequata, Phil. 



Vermicularia nodus, Phil. 

 Serpula plicatilis, Goldf. 



sulcata, Sow. 



intestinalis, Phil. 



E/habdocidaris maxima ?, Munst. 

 Pseudodiadema depressum, Ag. 



vagans, Phil. 



Astropecten Leckenbyi, Wr., sp. n. 



Scarburgensis, Wr., sp. n. 



Ophiura Murravii, Forbes. 



