494 



PEOCEEDINGS OF THE GEOLOGICAL SOCIETY. 



be considered of some interest. From the Tertiary beds downwards, 

 until the discovery by Dr. Dawson (see Lyell's ' Elements of Geology,' 

 6th ed. p. 508) of a species of Pupa in the coal-beds of Nova Scotia, 

 no evidence had been obtained of any terrestrial Mollusca, and there 

 still remains this wide interval to be filled up. In this I have 

 much pleasure in assisting, by recording the presence of three gen- 

 era of land-shells at the bottom of the Men dip Mine, in the deposit 

 above noticed. These are Vertigo, Proserpina, and Helix. I have 

 the honour to propose for them the specific names Vertigo Murchi- 

 soni, Proserpina LyeUl, and Helix Daivsoni. A single seed-vessel 

 of Cliara, which unfortunately is not in good condition, indicates 

 the presence _^of aquatic plants ; and the occurrence of the genera 

 Valvata and Planorbis establish the presence of terrestrial streams, 

 and their communication with the Mendip fissures. 



List of Organic Remains from Charter- House Lead- Mine, 270 feet 

 from the surface. 



Chara liassina, Moore. 

 Drift-wood, Jet. 

 Cristellaria rotula, LamTc. 



costata, U Orb. 



Dentalina communis, B' Orb. 



obliqua, Linn. 



obhquestriata, Beuss. 



Frondicularia striatula, Beuss. 

 Involutina liassica, Jones. 



, sp. 



Marginulina litxms, D' Orb. 

 Nodosaria raphanistrum, Linn. 



radicula, Linn. 



paucioostata, Beuss. 



Planularia Bronni, Boe^n. 

 Pentacrinites, joints of. 

 Cidaris Edwardsii. 

 EcMnodermata, several species. 

 Opliioderma, joints of. 

 Serpula, sp. 



Pollieipes rbomboidalis, Moore. 

 Crustacea, claws of. 

 Bairdia plebeia, Beuss. 



brevis, Jones 8f Kirkby . 



Cytliere bilobata, Miinst.. 



fabulina, Jones ^~ Kir/cb?/. 



intermedia, Mirnst. 



■ ambigua, Jones, MS. 



aequalis, Jones, MS. 



spinifera, Jooies, MS. 



Thraso, Jones, MS. 



Kirkbya plicata, Jones ^ Kir]<:h/. 



Moorea tenuis, Jones, MS. 



Bryozoa, sp. 



Argiope. 



Crania. 



Lingula. 



Hhynchonella variabilis, Schlofh. 



Terebratula punctata, Sow. 



Spirifer, fragments, several sp. 



Thecidium Moorei, I>av. 



triangularis, Z)' Orb. 



Zellania Davidsoni, Moore. 



Laboucherei, Moore. 



Lima, sp. 



Plicatula spinosa. Sow. 



Astarte, sp. 



Cardinia multicostata, 



CucuUtea. 



Leda Heberti, Martini, non Titei. 



Nucula, sp. 



Opis, sp. 



Cerithium gratum, Terq, 



rotvmdatum. 



paludinare, Terq. 



Semele, Z)' Orb. 



Chiton. 



Fissurella. 



Helix Dawsoni, Moore. 



Melania alternata, Terq. 



Nerinsea Mendipensis, Moore. 



Ortbostoma frunientum, Terq. 



triticum, Terq. 



Planorbis Mendipensis, Moo7r. 

 Pleurotomaria expansa. Sow. 



Mendipensis, Moore. 



Proserpina Lyelli, Moore. 

 StraparoUus tricarinatus, Mart. 



Oppeli, Mart. 



Solarium lenticulare, Terq. 

 Trocbus nitidus, Terq. 



edulus ? Stol 



sp,. 



Turbo, sp. 



, sp. 



Piettei, Martin. 



aranus, Martioi. 



Martini, Terq. 



tumidus, Moore. 



Turritella Humberti, Martin. 



