Vol. 68.] sTJCCEssioisr in the noeth-west op England. 525 



and ostracods, among which Lejyerditia oheni is conspicuous ; 

 while in one dark compact band a small rhynchonellid also occurs, 

 together with fish-remains. The Ehynchonella, although as a rule 

 badly crushed, appears to be referable to Wi. faiucettensis, which, 

 as already mentioned, characterizes in the Shap and Eavenstonedale 

 Districts the Productus-glohosus Band at the^base of the Seminula- 

 gregaria Sub-zone. Dr. A. Smith Woodward, who has kindly 

 examined the fish-remains, reports that they include a species of 

 Deltodus which is probably new, together with a spine of Ora- 

 canthus ; but the remains are not sufiiciently well-preserved for 

 specific description. 



In Penny farm Gill, the eastern tributary of Hebblethwaite Gill, 

 there is a good section exposed, from the Polygenetic Conglomerate, 

 through basement Carboniferous sandstones with obscure plant- 

 remains, to the lowest beds of Carboniferous Limestone. The beds 

 are dipping at a high angle, and include the upper portion of the 

 MicJielinia Zone. This zone occurs at a sharp bend in the stream, 

 about 180 yards above the junction of Pennyfarm Gill with Hebble- 

 thwaite Gill, and consists of dark impure limestone, which contains, 

 among others, the following fossils : — 



Athyris cf. exjpansa (PhilL). 

 Chonetes carinata, sp. nov. (MS.). 



Clisiophylhom multiseptatum, sp. nov. 

 Zaiphrentis enniskilleni Ed. & H. 

 Zaphrentis konwcki Ed. & H. 



This assemblage is characteristic, elsewhere in the i^^orth- 

 Western Province, of the upper portion of the MicJielinia Zone. 



The main line of the Dent Pault appears to pass to the east of 

 these beds, and soon brings in the typical Yoredale limestones. The 

 greater part of the Productus corrugato-hemisphericus Zone and 

 the Lower Dibunopliyllum Sub-zone would, therefore, seem to be 

 absent in the section ; while the Lower Miclielinia Zone appears also 

 to be cut out by a subsidiary fault. Farther south-west, in the Eiver 

 Clough, only a small portion of the lower series is exposed on the 

 west side of the fault ; while, to the east of it, we find a continuous 

 section of the Productus Zone and the Lower Dihunophyllum Sub-zone 

 leading up to the Yoredale beds above. The Lower Bihunophyllum 

 Sub-zone here also includes the ' spotted ' beds already described. 



It will thus be seen that the Dent Fault traverses the lower zones 

 of the Carboniferous obliquely, and that, so far as these zones are 

 preserved, they are similar to those found in the Kirkby Lonsdale 

 District on the west, the lowest fossiliferous horizon (as in the 

 Lupton District) being somewhere near the base of the Semimda- 

 gregaria Sub-zone. 



YI. The Grange and Purness Districts. 



The rocks of these districts, forming the northern shore of More- 

 cambe Pay, constitute the southern portion of the ring of Lower 

 Carboniferous rocks bordering the Lake District between the 

 Duddon estuary and Scout Scar. They are divided by a system of 

 north- and-south strike-faults into a series of blocks, separated one 



