24 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



[Apr, 6, 



or a stratified rubbly limestone-rock, conspicuous for the number of 

 species of Conchifera therein contained (chiefly C. Dimyaria). It 

 measures about 8 feet in thickness, and passes upwards into a hard, 

 smooth, fine-grained limestone, 4 or 5 feet thick (No. 4), containing: 

 numerous Brachiopoda. The following species I have obtained and 

 determined from this shelly series. They are catalogued together ; 

 but the majority are obtained from the lower bed (the rubbly and 

 more oolitic portion of the two ; No. 3). 



Fossils of JSfos. 3 and 

 Ammonites Sowerbii, Mill. 



Humphriesianus, Sow. 



, sp. nov. 



Truellei (var. compressus), d' Orb. 



lasviusculus, Soiv. 



, sp. nov. 



Nautilus excavatus, Sow. 

 Belemnites sulcatus, Mill. 

 Pleurotomaria elongata, Sow. 



punctata, Sow. 



Littorina (moulds). 

 Natica (moulds). 

 Myopsis Jurassi, Brmig. 

 Pleuromya donacina, Ag. 

 Pholadomya fidicula, Sow. 



■ obtusa, Sow. 



media, Ag. 



Heraulti, Ag. 



Lima duplicata, Sow. 



Etheridgii, Wright, sp. nov. - 



gibbosa, Sow. 



punctata, Phil. ? 



pectiniformis, Sehloth. 



Modiola gibbosa, Sow. 



plicata, Sow. 



Astarte excavata, Slow. 



elegans, Sow. 



obfiqua, oV Orb. 



The Bagstones of Dundry, forming the Zone of Ammonites Parkin - 

 soni. — Ragstone-beds {No. 5). — The smooth hard limestones just 

 mentioned are succeeded by loose and semi-oolitic beds, about 8 feet 

 in thickness. These are, or were, exposed in quarries both on the 

 north and south sides of the hill, — one to the west of the church, 

 but at a lower level ; the other on the south side, and on the road to 

 Chew Magna. The fossils are cemented together by a marly paste, 

 which decomposes under change of atmosphere. 



The organic remains in these beds somewhat agree with those of 

 No. 3 ; but they are not so numerous either in species or individuals, 

 and are nearly all in the form of casts. Several undescribed Am- 

 monites occur in these beds*. The following is the list of species 

 which I have obtained from this series ; but I believe that it is far 

 from complete. 



* Many of these were named in MS. notes by Mr. S. Worsley some years ago, 

 when the beds were extensively worked for lime and for road-purposes. These 

 fossils are still in the Museum of the Bristol Institution, with Mr. W.'s names 

 attached. 



4. Conchif era-beds. 

 Ceromya Bajociana, d' Orb. 



concentrica, Sow. 



Myoconcha crassa, Sow. 

 Trigonia striata, Sow. 



costata, Sow. 



Pecten lens, Sow. 



barbatus, Sow. 



Ostrsea flabelloides, LamJc. 

 Mytilus cuneatus, Phil. 

 Gervillia pernoides, Deslong. 

 Pinna cuneata, Phil. 

 Area, sp. 



Unicardium depressum, Phil. 

 Trichites nodosus, Lye. 

 Ehynchonella globata, Sow. 



spinosa, Sehloth. 



subtetrahedra, Dav. 



Terebratula globata, Sow. 



perovahs, Sow. 



sphseroidalis, Sow. 



Phillipsii, Morris. 



Stomechinus germinans, Phil. 

 Pseudodiadema depressum, Ag. 

 Hemicidaris granulosa, Wright. 

 Hemipedina Bakeri, Wright. 

 Thamnastrasa fungiformis, Edw. cf- 



Haime. 

 Latomasandra Flemingii, Edw.8fHaime. 



