124 J. E. Marr—The Skiddaw Slates. 



Azygograptics Lapworthi, Nich. Barf; N.E. of Sleet How, "W. of Braithwaite ; 

 Hodgson How ; Carlside Edge. 

 „ coslebs, Lapw. Ellergill. 



Janograptus^ sp. Brunstock Scar, below Randal Crag. 



Tetragraptus Bigshyi, Hall. Outerside ; "White Horse Fell ; Great Knott, Randal 



Crag ; Bassenthwaite Sand Beds ; Gibraltar, Skiddaw (in chias- 



tolite slate). 



Tetragraptus bryonoides, Hall. Outerside ; Barf ; Randal Crag ; "White Horse 



Fell ; Frozen Gill. 



,, quadribrachiatus, Hall. Outerside; Scale Hill, Crummock ; Aiken 



Gill (Scawgill) ; N.E. of Gnzedale Pike ; Carlside Edge ; Barf. 

 ,, Meadi, Hall. Barf; S. end of Randal Crag. 



,, crucifer, Hall. Barf. 



,, fruticosus, HaR. (Recorded by Lapworth.) 



Dichograptus Sedgwicki, Salt. Braithwaite ; Mire House, near Skiddaw. 



,, octobrachiatits, Hall. Outerside; Carlside Edge ; Slape Crags above 



Hole Gill, Brackentbwaite. 

 ,, n. sp. Outerside. 



Zoganograptus Logani, Hall. Outerside ; Barf ; Randal Crag. 

 Trichograptus gracilis, Nich. Thornship Beck ; Ashlock Sike ? 

 Teimiograptus multiplex, Nich. Near Peelwyke (not in situ) ; New Brow Quarry, 



Upper Lorton ; How, Scale Hill. 

 Schizograptus reticulatus, Nich. Barf ; Carlside Edge ; Scale Hill. 

 Trochograptus ? vagans, Nich. Scale Hill. 

 Bryograptus ramosus, Brogger. Barf. 



,, CaZ/a-ye/, Lapw. ? Barf. 



Fhyllograptus typiis. Hall. Barf ; "Whiteside ; Carlside ; E. of Dodd "Wood ; Randal 



Crag ; Glenderamakin Valley, Mungrisdale. 

 Fhyllograptus Anna, Hall. Randal Crag. 



,, angustifolius, Hall. Barf; Carlside; "Whiteside; Bassenthwaite 



Sand Beds ; Knott Head, "Whinlatter ; Ellergill. 

 ,, ilicifoliiis. Hall. N.E. of Sleet How, "W. of Braithwaite. 



Fiplograptus dentattis, Hall. Outerside ; Bassenthwaite Sand Beds ; N."W. of 

 Lingside, Skiddaw ; Glenderamakin "Valley, Mungrisdale ; Eller- 

 gill ; Master Sike, Cross Fell area. 

 Climacograptus. Outerside ; Ellergill. 

 Cryptograptus ? Hopkinsoni, Nich. Outerside ; Thornship Beck. 



„ F antennarius, HaW. Outerside; Glenderamakin Valley, Mungrisdale. 

 , , tricornis, Carr. Outerside ; Ellergill. 



Glossograptus nrmatus, Nich. Thornship Beck. 

 Trigonograptus ensiformis, Hall. Mosedale, near Troutbeck. 



,, lanceolatus,]^ ich. Ellergill. 



Dicellograptus moffatensit, Carr. ? Barf ; Randal Crag ; Bassenthwaite Sand Beds. 

 Ctenograptus annulatus, Nich. Barrow, near Braithwaite ; "Wath Brow, near Keswick. 

 Thamnograplus DoveH, Nich. S."W. of Randal Crag. 



So many fossils which are elsewhere considered characteristic of 

 different horizons occur in the same locality, e.g. at Barf and at 

 Outerside, and the same species recur with such frequency in strata 

 which appear to be at different horizons, that the attempt to divide 

 the Skiddaw Slates into different fossil zones seems at first sight 

 impossible. Amidst rocks so contorted as the Skiddaw Slates, the 

 lesson taught by the convoluted rocks of the Southern Uplands of 

 Scotland must not be forgotten, and a careful study of the list above 

 given in the light gained by examination of other areas proves the 

 zonal classification of the rocks to be applicable here. At the same 

 time, owing to the difficulty of obtaining good specimens in situ 

 (a large number of the specimens in collections having been 

 gathered, from the loose debris or screes on the sides of hills) any 



