1868.] NICHOLSON CONISTON-FLAG GRArXOLlTES. 523 



which five are new, whilst the remainder have all been previously 

 described. Of these latter, however, Oraptolites turrkidatiis, Barr., 

 G. Bohemicus, Barr., Diplograpsus angustifoliys, Hall, D. piitiUus, 

 Hall, and Retiolites Gelnitziamis, Barr., are now for the first time 

 fully described from British specimens. 



List of the GraptoKtes of the Coniston Flags. 



Cliraacograpsus (Diplograpsus) teretiusculus, Hts. Mosedale in Long Sleddale, 



and Skelgill Beck. 

 Diplograpsus angustifolius, Hall. Skelgill Beck. 



confertus, Mck. Skelgill Beck. 



folium, His. Skelgill Heck. 



palmeus, Barr. Skelgill Beck. 



pristis, His. Mosedaie in Long Sleddale. 



putillus, Hall. Skelgill Beck. 



• tamarisciis, Nich. Skelgill Beck. 



vesiculosus, N.ck. Skelgill Beck. 



Graptolites Bohemicus, Barr. Skelgill Beck. 



colonus, Barr. Torver Beck, Horton in Kibblesdale, Broughton Moor, 



&c. 



discretus, Nich. Mosedaie and Skelgill Beck. 



fimbriatus, JSHch. Skelgill Beck. 



lobiferus, M'Coy. Skelgill Beck. 



Nilssoni, Barr. Skelgill Beck and Mosedaie. 



priodon, Bronn. Skelgill and Broughton Moor. 



Sedgwickii, Portl. Mosedaie, Skelgill Beck, and Broughton Moor. 



Sagittarius, Linn. Mosedaie and Skelgill Beck. 



tenuis, Tortl (?). Skelgill Beck. 



turriculatus, Barr. Mosedaie in Long Sleddale. 



Rastrites Linnau, Barr. Mosedaie. 



peregrinus, Barr. Skelgill Beck. 



Retiolites Geinitzianus, Barr. Bi'oughton Moor. 

 perlatus, Nich. Mosedaie in Long Sleddale. 



Diplograpsus palmeus, Barr.* PI. XIX. figs. 1-3. 



Graptolithus palmeus, Barrande, Grapt. de Boheme, pi. 3. 



figs. 1-4 & 7. 

 Diplograpsus palmeus, Geinitz, Graptolithen, Taf. 1. figs. 5-15. 

 foliaceus, Murchison(?), Sil. Syst. pi. 2Q. fig. 3. 



Frond from less than | to more than 1 inch in length, exclu- 

 sive of the distal prolongation of the axis ; celluliferous on the 

 two sides, and attaining a width of from -^ to i of an inch. The 

 base is formed by a broad, obtuse, and truncated radicular pro- 

 cess, the point of which usually presents the appearance of 

 having been broken off proximally, whilst it is prolonged dis- 

 tally into the first two cellules. The form of the frond, though 

 variable, is highly characteristic. In most specimens the widest 

 portion of the frond is immediately above the base, about the level 



* The species here described under this name is identical with that figured 

 as B. pristis, His., in the third edition of ' Siluria ' (see Foss. xi. fig. 4), and 

 figured as D. folium. His., in the last edition of the same. If this is really the 

 B. folium of Hisinger, then this name has the priority over J), palmeus, Barr. ; 

 but I am not in a position to refer to the original work, and am therefore 

 unable to decide this point. 



