400 MR ROBERT KIDSTON ON THE FOSSIL FLORA OF THE 



Sigillaria alternans, Sternberg, sp. 



Sigillaria alternans, L. & H., Fossil Flora, vol. i. pi. lvi. 



Sigillaria alternans, Feistmantel, Vers. d. hbhm. Kohlenab , Abth. iii. p. 23, pi. v. fig. 3; pi. vi. 



figs. 1-3 ; pi. vii. figs. 1, 2. 

 Syringodendron alternans, Sternb., Vers., i. fasc. 4, p. xxiv. pi. lviii. fig. 2. 

 Sigillaria catenulata, L. & H., Fossil Flora, vol. i. pi. lviii. 



Remarks. — Sigillaria alternans must not be regarded as a species, but only 

 as a decorticated condition of Sig. reniformis, Sig. Iwvigata, and possibly other 

 species. 



Localities : — Radstock ; Braysdown Colliery. 



Sigillaria notata, Steinhauer, sp. 



Phytolithus notatus, Steinhauer, Trans. Amer. Phil. Soc., vol. i. p. 294, pi. vii. fig. 3, 1818. 



Remarks. — The type of this species was described by Steinhauer from Dun- 

 kerton. I have not, however, seen additional specimens from the Radstock 

 Series. 



Locality : — Dunkerton. 



Sporangia. 

 Plate XXVII. fig. 9. 



Remarks. — One of these sporangia is shown on PI. XXVII. fig. 9. Several 

 names have been applied to these organisms. That figured here is perhaps 

 similar to Lesquereux's Caiyolithes perpussillus* 



While examining Scotch carboniferous shales for spores with Mr James 

 Bennie, great quantities of these fossils were met with in some of the shales. 

 They varied much in size and form, and we believe them to be sporangia. 



Locality : — Upper Conygre Pit. On slab with Lepidodendron lanceolatum, 

 Lesqx. 



Sporangia (?). 

 Plate XXVII. fig. 8. 



Description. — More or less circular bodies about 5 mm. in diameter, with a 

 small circular depression at the base, about 1 mm. in diameter, from which 

 diverge four curved lines. The sides bear two slightly depressed areas. 



Remarks. — These fossils are probably Lycopod sporangia. The small 

 circular depression in all likelihood marks the point of attachment to the bract, 

 and the slight lateral depressions may have been caused by the mutual pressure 

 of similar bodies placed close together. 



Locality : — Camerton. 



* Coal Fl/rraof Pennsyl., vol. iii. p. 825, pi. cxi. fig. 23 ; Zeiller, Flore foss. du Bassin houil. de 

 Valenciennes, pi. xciv. fig. 18. 



