RADSTOCK SERIES OF THE SOMERSET AND BRISTOL COAL FIELD. 397 



Radstock area, but are evidently the foliage of more than one species of 

 Sigillaria. 



I am strongly inclined to regard Sig. Serlii as only a young condition of 

 Sig. Brardii, Brongt. 



Locality : — Radstock. 



Sigillaria M'Murtrieii, Kidston. 



Sigillaria M'Murtrieii, Kidston, Ann. and Mag. Nat. Hist., 5th ser., vol. xv. p. 357, pi. xi. figs. 

 3-5, 1885; Proe. Roy. Phys. Soc. Edin., vol. viii. p. 415, pi. xxi. figs. 3-5. 



Remarks. — Rare. 



Localities : — Radstock ; Braysdown Colliery. 



Sigillaria monostigma, Lesquereux. 



Sigillaria monostigma, Lesqx., Rept. Geol. Survey of Elin., vol. ii. p. 449, pi. xlii. figs. 1-5, 1866 ; 



Coal Flora of Pennsyl., vol. ii. p. 468, pi. lxxiii. figs. 3-6, 1880; vol. iii. p. 793, 1884. 

 Sigillaria monostigma, Schimper, Traite d. paleont. veget., vol. ii. p. 101. 

 Asolanus camptotcenia, Wood, Trans. Amer. Phil. Soc, vol. xiii. p. 342, pi. ix. fig. 3, 1866. 

 Sigillaria camptotaenia, Zeiller, Flore foss. du Bassin liouil. d. Valenciennes, pi. lxxxviii. figs. 4-6. 



Remarks. — Rare. Weiss * is of opinion that Sig. monostigma is not specifi- 

 cally distinct from Sig. rimosa, Gold.;t on the other hand, Schimper thinks 

 them different. 



In the meantime I prefer to regard Sigillaria monostigma as specifically 

 distinct from Sigillaria rimosa, Gold., on account of the difference in the 

 structure of the cicatricules. 



Localities : — Braysdown Colliery ; Lower Writhlington Pit, 



Sigillaria tessellata (Steinhauer), Brongniart. 



Sigillaria tessellata, Brongt., Hist. d. veget. foss., p. 436, pi. clvi. fig. 1 ; pi. clxii. figs. 1-4. 



Sigillaria tessellata, Geinitz, Vers. d. Steinkf. in Sachsen, p. 44, pi. v. figs. 6-8. 



Sigillaria tessellata, Zeiller, Veget. foss. du terr. liouil., p. 132, pi. clxxiii. fig. 2 ; Flore foss. d. 



Bassin liouil. d. Valenciennes, pi. lxxxv., pi. lxxxvi. figs. 1-6. 

 Favularia tessellata, L. & H., Fossil Flora, vol. i. pis. lxxiii.-lxxv. 

 Phytolithus tessellatus, Steinhauer, Trans. Amer. Phil. Soc, vol. i. p. 295, pi. vii. fig. 2. 

 (?) Sigillaria elegans, Brongt., Hist. d. veget. foss., p. 438, pi. cxlvi. fig. 1 ; (? civ.) and clviii. fig. 1. 

 (?) Favularia elegans, Sternb., Vers., i. p. 14, pi. Iii. fig. 4. 



(?) Sigillaria Knorrii, Brongt., Hist. d. veget. foss., p. 444, pi. clvi. figs. 2, 3 ; pl. clxii. fig. 6. 

 (?) Galamosyrinx Zwickaviensis, Petzholdt, Neues Jahro., 1842, p. 181, pl. v. 

 (?) Sigillaria sexangula, Sauveur, Veget. foss. de la Belgique, pl. liii. fig. 1. 



Remains. — This is the most common Sigillaria in the Radstock Series. The 

 specific limitation of this extremely variable species is a very difficult and 

 still unsettled point. All the specimens which I have seen from Somerset are 



* Weiss, Foss Flora d. jiingst. Sth. u. d. Rothl., p. 160. 1 



t Goldenberg, Flora Saraipontana fossilis, Heft ii. p. 22, pl. vi. figs. 1-4. 



