488 THE CARBONIFEROUS SYSTEM. 



are included under this name ; but they cannot be separated at present. 

 M. C, Sydney (R. Brown) ; Joggius and Pictou (J. W. D.) ; U. C , 

 Joggins (J. W. D.). 



7. L. dilatatum, Lindley and Hutton. M. C, Joggins (J. "W. D.). 



8. L., sp. like tetragonum, Goepp. Obscurely marked, but a dis- 

 tinct species, unless an imperfectly preserved variety of L. tetragonum. 

 The areoles are square, with a rhombic scar at the upper corner of each. 

 L. C, Horton (J. AY. D.). 



9. L. binerve, Bunbury. M. C, Sydney (R. Brown). 

 10.' L. tumidum, Bunbury. I think it probable that this species 

 belongs to the genus Lepidophloios ; but I have not seen a specimen. 

 M. C, Sydney (R. Brown). 



11. L. gracile, Brongn. In Brown's list in "Acadian Geology." 

 Probably a variety of the next. M. C, Sydney (R. Bi-own). 



12. L. elegans, Brongn. In Bunbury and Brown's lists. M. C. 

 Sydney (R. Brown). 



13. L. plumarium, L. and H. M. C, Sydney (in Brown's list). 



14. L. selaginoides, Stemb. M. C, Sydney (in Brown's list). 



15. L. Harcourtii (Witham). M. C, Sydney (in Brown's list). 



16. L. clypeatum (?), Lesqx. M. C, Sydney (R. Brown); U. C, 

 Joggins (J. W. D.). 



17. L. aculeatum, Sternberg. M. C, Sydney (R. Brown). 



18. L. plication, spec. nov. (Fig. 169, C). Leaf-areoles much elon- 

 gated ; breadth to length as 1 to 5 or 6, tranversely rugose ; central 

 line indistinct. Leaf-scar rhombic, with three vascular points ; scars 

 in old stems separated by rugose bark, and somewhat elongate. M. C, 

 Pictou (J. W. D.). 



19. L. personatum, spec. nov. (Fig. 169, B). Areoles ovate acu- 

 minate ; breadth to length as 1 to 3 or 4, contiguous in young stems ; 

 central line distinct ; lower part of areole with transverse lines. Leaf- 

 scars ovate, with two marks above and two below ; leaves slender, 1 

 inch long, one-nerved. M. C, Sydney (R. Brown). 



Halonia, L. and H. 



Halonia, sp. A specimen probably referable to this genus from 

 Grand Lake, in the collection of C. F. Hartt. 



Lepidostrobus, Brongn. 



1. Lepidostrobus variabilis, L. and H. The most common species. 

 M. C, Sydney (R. Brown) ; Pictou and Joggins (J. "W. D.). 



