530 PROF. E. J. GARWOOD ON THE LOWER CARBONIFEROUS [DeC. I9I2, 



Girvanella sp. 



Alveolites ccqnllaris (PbilL). 

 Aulophyllur/i sp. (large) cf. pachyendo- 



thecum Thomson. 

 Aulopora sp. 



Caninia cf. cylinclrica (Scoulei*). 

 Carcinophyllum Vaughan. 

 CUsiophyllmn aff. Jceyserlingi M'Coy. 

 Cyathophylhtrn regium Phill. 

 Dihunophyllum muirheacU Nicla. & 



Thomson. 

 Bihunophyllurii turhbiahirii (M'Coy). 

 Heterophyllia grandis M'Coy. 

 Lithostrotion junceum (Fleming), 

 Lithostrotion martini Ed. & H. 

 Lithostrotion rdcoyanum Ed. & H. 

 Litliostrotion aff. portlochi (Bronn). 

 Lonsdalia floriformis (Fleming). 

 Tiopliophyllum sp. Compound form. 

 Michelinia cf. tenuisepta (Phill.). 



Very small form. 

 Zaphrentis aff. constricta Carruthers 



MS. 



Syringopora geniculata Phill. 



Chonetes of. compressn Sibly. 

 Dielasma Jiastatum (Sby.). 

 Orbiculoidea nitida (Phill.). 

 Froductus giganteus Mart. 

 Producttis aff. grandicostatus M'Coy. 

 Productus cf. riiargaritaceus Phill. 

 Productus quinciincialis Phill, 

 Productus scabriculus Mart. 

 Productus semireticulatiis Mart. 

 Bhipidomella miclielini (L'Eveille). 

 Pugnax ci. pleurodon (Phill.). 

 Schellwienella cf. senilis (Phill.). 

 Spirifer antiquatus Sby. 

 Spirifer hisidcatus Sby. 

 Spirifer {planicostus M'Coy) = eras- 



sus de Kon, 

 Spirifer duplicicostus Phill. 

 Spirifer aflF. grcuulicostatus M'Coy. 



Loxonema rugiferum Phill, 

 Pleurotomaria sp. 



The three small oubliers of Hazel JRigg, Castle Head, aud Holme 

 Island on the east side of the main mass consist of large masses of 

 fanlt-breccia let down against the Lindale Eault. Holme Island 

 itself consists of a small dome of limestone crushed against the 

 downthrow side of the fault ; the beds here lie near the summit of 

 the Lower Dihunophyllum Sub-zone. The little outlier of Hazel 

 Eigg probably represents a much lower horizon, near the base of 

 the succession, but the beds are crushed, recrystallized, and quite 

 unfossiliferous. A fault passes between Holme Island and the 

 Meathop outlier, with the result that, whereas the island is 

 composed of beds near the summit of the Lower Dihunophyllum 

 Sub-zone, the Meathop outlier, as already shown, contains beds as 

 low as the Camarotoechia-proava Band. 



In the Holker block we meet with beds from the base of 

 the Michelinia Zone to the Upper Dihunoj^hyllum Sub-zone ; and a 

 nearly continuous section occurs, from the lowest beds at Park 

 Head to near the summit of the Lower Dihunophyllum Sub-zone. 

 This block is bounded on the west by the Leven estuary, and 

 is cut off on the east by the Cark-Haverthwaite fault. East of 

 this fault the Silurian rocks form a conspicuous fault-scarp ; while, 

 on the west side, the country is occupied by alluvial deposits 

 forming Deer Dyke Moss and Barker Moss, out of which rise several 

 islands of Lower Carboniferous rock. 



The Oamarophoria-isorhyncha Sub-zone is exposed in 

 two sections — one situated between Park Head and Barker Scar, and 

 the other farther north, between Skelwith Hall and Reake Hill in 

 the neighbourhood of Low-Frith Parm, where the two subdivisions 

 of the Michelinia Zone are seen in direct upward continuation one 



