1865.] DAWSON — COAL-PORMATION. 159 



16. P. DECFRREi^s, Lesq. 



Has pinnules more crowded, decreasing towards the apex, but may 

 be a variety. 



M. C, Sydney (M, Brown), 



17. P. Pluckenetii, Sternb. 

 M. C, Sydney (E. Brown), 



Beinertia, Goeppert. 

 Beikertia Gcepperti, spec. nov. PL XIII. fig. 101. 



Bipinnate ; pinnae broad, contiguous, obtuse, with thick pinnules. 

 Pinnules rounded above, obovate below. Midrib thick, obhque, 

 dividing above into a tuft of irregular hair-like veins. 



M. C, Grand Lake (0. F. Hartt) ; Bay de Chaleur {Logan) \ U. C, 

 Joggins {J, W. D.), 



Htmen-qphyllites, Goeppert. 

 Htmenophtllites pentadactyla, spec. nov. 



In general habit like Sphenopteris microloha, Goepp., but with 

 pinnules divided into from four to seven obtuse cuneate lobes, each 

 with one vein. 



M. C, Sydney (JR. Brown). 



Pal^opteris, Geinitz. 



1. Pal^opteris Hartii, spec. nov. PI. YIII. fig. 35. 



Stem or leaf-bases transversely wrinkled with delicate lines ; 

 scars transversely oval, slightly appendaged below; vascular scars 

 confluent. Breadth 1-4 in. ; length 0*6 in. 



M. C, Grand Lake {0, F. Hartt). 



2. P. AcADicA, spec. nov. PI. YIII. fig. 36. 



Stem or leaf-bases longitudinally striated ; scars transverse, flat 

 above, rounded and bluntly appendaged below ; vascular scars in a 

 transverse row. Breadth of scars 0-7 inch ; length 0-5 inch. 



U, C, Pictou {J, W. D.), 



Caulopteris, L. & H. 

 Several smaU erect stems at the Joggins seem to be trunks of ferns, 

 but are too obscure for description. 



PsARON-iTJS, Cotta. 

 Trunks of this kind must be rare in the Nova Scotian coal-fields 

 A few obscure stems surrounded by cord-like aerial roots have been 

 found, and probably are remains of plants of this genus. 



Megaphyton, Artis. 

 1 . Megaphyton magnificum, spec. nov. PL YIII. fig. 34. 



Stems large, roughly striated longitudinally; scars contiguous, 

 orbicular, deeply sunk, nearly 3 inches in diameter, and each with a 

 bilobate vascular impression 2 inches broad and an inch high. 



M, C, Joggins (J^.W,i).). 



