15 



STIGMARIEAE. 



STIGMARIA FICOIDES, BRONG. 



Brong. Mem. Mus. d' hist, des veyet. foss. p. 82, 88, pi. 7; 



Prodr. ]). 88. 

 Sternb. Vers. I, p. 38; II, p. 209, pi. 15, Jif/s. 4, 5. 

 Unger , Gen. et Spec. p. 227. 



VARIOLARIA FICOIDES, 

 Sternh. Vers. I, p. 24, ^j/. 12, fgs. 1, 2, 3. 



Our specimen exhibits many of the permanent features 

 of this common species, i to which alone it seems re- 

 ferable, and is individually characterized by a remark- 

 able uniformity in the arrangement of its tubercles, 

 which possess a very distinct diametrical marking in- 

 stead of the central dot -like impression, — usually at- 

 tributable to the species. The surface has a very slight, 

 but still quite perceptible furrowed developement. 



This specimen seems, indeed, to bear testimony to 

 the truth of Bunbury's observation, that "The variations 

 observable in different specimens of this common Stig- 

 maria are very numerous; — yet slight and scarcely 

 admitting of precise definition." 2 



This species bears much analogy to the Stigmaria 

 anahathra of Corda, "^ with which it is often confoun- 



1 "St. trunco decumbente, ramis alternis teretiusculis primum 

 laevibus dein plicatis v. rugulosis, foliis teretibus longis, fasci- 

 culis vasorum cuneiformibus, vasis amplis porosis." — linger, ibid. 



2 The Quarterly Journal of the Geological Society of London, 

 — 1847: — C. J. F. Bunbury on the Coal Formation of Cape 

 Breton. 



3 Corda, Beitr'dge, p. 34, plA'i; Unger, Gen. et Spec. p. 221. 



STIGMARIA FICOIDES, 

 Lindl. and Hutt. Foss. Flo. vol. 1, p. 94, pi. 31 ^o 36 : — vol. 2, 



