118 Professor FE. J. Garwood—Horizon of Archeosigillaria. 
bed in the lowest layer of the Ashfell Sandstone of the Shap area; 
the further interesting discovery two years ago of Michelinia megastoma 
with Camarophoria isorhyncha on the summit of Meathop Fell no 
longer leaves any reasonable doubt as to the horizon to which these 
beds belong. 
Mr. Jackson mentions the occurrence of Spirifer ef. furcatus 
(McCoy) and Productus aff. corrugatus (McCoy) in addition to the 
forms already given in my original account of the beds. This Spirifer 
bed forms a well-marked horizon along the top of the old quarries 
on both sides of Meathop Fell, and these two fossils are always 
found at this horizon in the district, together with the other character- 
istic species (given below). Mr. Jackson also states that he collected 
Retieularia aff. lineata (Martin) from this Spirifer bed. This state- 
ment, if corroborated, is decidedly important, as I have never found 
this species in the northern area below the horizon D 2-D3. It is 
possible, however, that Mr. Jackson may be mistaken in his identi- 
fication. Numerous examples of Athyris glabistria also occur at this 
horizon, and as the shells are badly preserved and often fragmentary 
an accurate determination is not always possible. My collections 
from the Spirifer bed at Meathop contain several other species not 
previously recorded, the majority of which also occur in the cor- 
responding horizon in the Shap area. ‘The following is a list of 
forms found in both localities, and shows the close parallelism of 
the deposits :— 
Michelinia megastoma. Productus cf. corrugato-hemisphericus. 
Camarophoria isorhyncha. P. cf. pustulosus. 
Syringothyris cuspidata. Orthotetes crenistria (C 1 var.). 
Spirifer cf. furcatus. Euomphatus. 
Athyris glabistria. Archeosigillaria Vanuxemi (Goppert). 
Derbya sp. Bellerophon sp. 
Seminula gregaria, McCoy. 
In addition to these characteristic forms several interesting corals 
occur which are described in detail in my forthcoming paper. 
The beds underlying the Sprrifer bed at Meathop also contain forms 
which occur in a similar position below the Zsorhyncha bed in the 
Shap area and confirm the correlation here given. It will be 
sufficient here to mention the occurrence in the lowest beds at 
Meathop of Humetria proava (Phil.) and Solenopora sp., which I have 
found to characterize the lower portion of the C 1 horizon wherever 
these beds are exposed in the northern area. 
With regard to the plant remains of Meathop, and elsewhere in 
Westmorland, they are the rule rather than the exception in these 
lower beds, and may occur at any horizon which happens to be 
locally near the base of Carboniferous formation wherever the beds 
were deposited in proximity to a subsiding land surface. Thus they 
occur near the local base at Meathop, Shap Abbey, Shap Toll Bar, 
Pinkskey Gill, Hebblethwaite Gill, near Horton-in-Ribblesdale and 
elsewhere. 
Mr. Jackson suggests that 4. Vanuxemi ‘may be helpful in 
arriving at a satisfactory conclusion as to the correct horizon” of the 
beds which contain it, and adds, ‘‘ especially when the exact horizon 
