102 BRITISH CtRAPTOLITES. 



in form. The line of tlie virgiila seems to be indicated, but it terminates Avitli the 

 polypary, or, at any rate, has never been observed to project beyond it. All the 

 thecge are curved, and are directed upward and outward, though the curvature 

 decreases from the proximal to the distal extremity of the polypary. 



Affinities. — F. anna is characterised by its small size and closely set thecaj ; these 

 particulars serve to separate it from all other known species except P. ilicifolius, 

 from which it can, however, be distinguished by the constant direction of curvature 

 of the thecEe as contrasted with the change in direction of growth of the thecae of 

 P. ilicifolius. 



Horizon and Localities. — Arenig, Middle SkiddaAv Slates. 



L alee District : Randal Crag, Skiddaw ; Barf; Carlside Edge. SoiiJh Scutlaud : 

 Bennane Head, Ballantrae. 



Associates, etc. — P. anna occurs in some abundance at certain horizons in the 

 Skiddaw Slates associated Avith P. a.ngustifolius. Specimens are in the collection 

 of the WoodAvardian Museum and in Lapworth's and Postletliwaite's private 

 collections. 



Phyllograptus ilicifolius, var. grandis, Elles. Plate XIII, fig. 8. 



1898. Phyllograptus ilicifolius, var. grandis, Elles, Quart. Jouru. Geol. Soc, vol. liv, p. 493, fig. 15. 



Stipes constituting the polypary so united as to form two broad intersecting 



ovals, each of which is widest at its upper end. Thecse eleven to thirteen 



in 10 mm., amount of curvature and direction of growth varied, four and a 



half times as long as Avide, and in contact throughout their length. Aper- 



tural margins concave, mucronate, oblique. 



Descrijption.- — The polypary has a length of 25 mm. and a maximum Avidth of 



1 5 nun. The curvature and direction of growth of the thecse in different pai'ts of 



the polypary are highly characteristic ; near the proximal end they first ascend, and 



then curve out and down ; in the centre of the stipe they are so slightly arcuate 



that they appear almost horizontal ; Avliile toward the distal extremity they are 



directed outward and upward, and ultimately almost straight upAvard. 



Affinities. — P. ilicifolius, var. grandis, closely resembles those specimens of 

 P. ilicifolius which Hall has figured, but it is three times the size of the Canadian 

 forms. 



Horizon and Locality. — Arenig, Middle SkiddaAV Slates. 

 Lake District : north-east Sleet How, KesAvick. 



Associates, etc. — The associates of this form are unknoAvn. The type specimen 

 is in the WoodAvardian Museum. 



