474 THE CARBONIFEROUS SYSTEM. 



one inch in diameter. This is probably generically distinct from the 

 preceding species. M. C, Joggins (Sir W. E. Logan ; J. W. D.). 



Araucarites, Unger. 

 Araucarites gracilis, spec. nov. (Fig. 159, A). Branches slender, - 2 

 inch in diameter, with scaly, broad leaf-bases. Branchlets pinnate, 

 numerous, very slender, with small, acute, spirally disposed leaves. 

 U. C, Tatamagouche (J. W. D.). 



Sigillaria, Brongn. 



1. Sigillaria (Favularia) elegans, Brongn. (Fig. 161, B). Abundant, 

 especially in the roofs of coal seams. S. hexagona includes old trunks 

 of this species. Young branches have scars of an elliptical form like 

 those of S. Serlii. M. C, Joggins (J. W. D.) ; Sydney (R. Brown). 



2. S. (Fav.) tessellata, Brongn. M. C, Joggins and Pictou (J. W. 

 D.) ; Sydney (R. Brown). 



3. S. (Rkytidolepis) scatellata, Brongn. (Fig. 161, L, leaf). M. and 

 U. C, Joggins (Lyell; J. W. D.). 



4. S. (Mh.) Schlotheimiana, Brongn. M. C, Joggins (Lyell ; 

 J. W. D.)! 



5. 8. (Rh.) Saullii, Brongn. M. C, Sydney (R. Brown) ; Joggins 

 (Lyell ; J. W. D.). 



6. S. Brownii, Dawson (Quart. Journ. Geol. Soc, vol. x.). (Figs. 

 30 and 161, A). M. C, Joggins (J. W. D.). 



7. S. reniformis, Brongn. M. C, Joggins (Lyell; J. W. D.) ; 

 Sydney (R. Brown). 



8. S. Laevigata, Brongn. M. C, Sydney (R. Brown) ; Joggins 

 (J. W. D.). 



9. S. planicosta, spec. nov. (Fig. 161, K). Scars half hexagonal 

 above, rounded below ; lateral vascular impressions elongate ; central 

 small, punctiform. Ribs 1 - 1 inch broad, smooth externally, longi- 

 tudinally striated on the ligneous surface. Slight transverse wrinkles 

 between the scars, which are distant from each other about an inch. 

 Allied to S. laevigata, but with very thin bark. M. C, Sydney (R. 

 Brown). 



10. S. catenoides, spec. nov. (Fig. 161, 1). Cortical surface unknown ; 

 ligneous surface with puncto-striate ribs 1*1 inch in breadth, and with 

 single oval scars half an inch long, and an inch distant from centre to 

 centre. A very large tree. Perhaps, if its cortical surface were 

 known, it might prove to be a large Syringodendron. M. C, Joggins 

 (J. Smith) ; Sydney (R. Brown). 



11. S. striata, spec. nov. (Fig. 161, G). Ribs prominent, coarsely 



