New BrunswicJci Maine, and Eastern Canada, 177 



the bark was firm and durable. The scales are flat, quite angu- 

 lar and closely appressed, but seem to have been thick, and are 

 evidently free at their extremities and without any indication 

 that they supported leaves. They show no ribs or nervures ; but 

 are covered with little subordinate projecting points or scales as 

 shown in the figures. 



I formerly referred this plant to Knorria, on account of its scaly 

 stem ; but this genus has recently been placed in a somewhat 

 equivocal position by Goeppert, * who finding, as I had previously 

 done,! that the plants called Knorria in the Lower coal measures, 

 are really decorticated or imperfectly preserved Lepidodendra or 

 Sagenariae, seems disposed to abandon the genus. 



The present species might however still remain as a typical 

 Knorria having a scaly stem and quite distinct from Lepidodendron, 

 but to avoid any confusion between it and the plants heretofore 

 known as Knorria but now ascertained to be of a diff'erent character, 

 I prefer to place it in the mean time in Selaginites ; in the hope 

 that more perfect specimens may soon illustrate more fully its 

 aflinities. 



Concluding Remarks 



In comparing with each other the plants of the three localities 

 above referred to, it will be observed that they have few species 

 in common. Probably two species are common to Perry and 

 St. John, and two to the former and Gaspe ; while it is doubtful 

 if one is found in all three. It must be observed however that 

 according to Mr. Billings, the fossil shells of the Gaspe sandstones 

 indicate a Lower Devonian age, while it is quite probable that 

 the rocks of Perry and St. John may be Upper Devonian ; and 

 this is the more likely as the plants of the St. John beds are de- 

 cidedly nearer in their facies to those of the coal formation than 

 are those of Gasp^. 



None of the species found in these old beds have as yet been 

 recognised in the carboniferous system in British America ; and 

 only one, C. transitionis, elsewhere. The generic types are how- 

 ever the same, with the exception of Prototaxites and Psilophyton, 



* Flora der Silurischen, &c., 1860. 



t Paper on Lower Coal measures, Journal of Geological Society, 

 Vol. XV. P. 69, 



Can. Nat. 2 Vol VL Xo. 3. 



