1862.] DAWSOK DEVOK-IAN PLAl?tS. 321 



identical with the above species, which belongs to the Lower Carboni- 

 ferous of Europe. 



49. Sphenopteeis MAEGnfATA, sp. nov. PL XV. fig. 38 a, h. 



This resembles the last sjoecies in general form, hut is larger, with the 

 pinnules round or round-ovate, divided into three or five rounded 

 lohes, and united hy a hroad hase to the broadly winged jpetiole. 



Found with the preceding. One specimen, given to me by Mr. 

 Hartt, shows a frond 6 inches in length. 



50. Sphenopteeis Haettii, sp. nov. PL XYI. fig. 48 a, h. 



Bipinnate or tripimiate. Divisions of the rachis margined. Pinnules 

 oblique, and confluent with the margins of the petiole ; bluntly 

 and unequally lobed. Nerves small, oblique, twice- forhed. 



This beautiful Fern very closely resembles S. alata from the 

 coal-field of Port Jackson, but differs in several of its details. I 

 name it in honour of Mr. Hartt, the discoverer of several of the 

 St. John Ferns. Found with the preceding. 



51. Sphenopteeis Hitchcockiana, sp. nov. PL XYI. fig. 51 a, b, c. 



Stipes stout, sti^aight, rugose, giving off slender secondary petioles, 

 which ramify cUchotomously and terminate in minute obovate 

 leaflets. 



This beautiful plant, from Perry, which I name in honour of its 

 discoverer, who worthily bears a name long noted in American Geo- 

 logy, has the aspect rather of a stem with excurrent branchlets than 

 of a frond. Its venation cannot be distinguished. It belongs to a 

 peculiar group or subgenus (Davallioides of Goeppert) characteristic 

 of the Devonian and Lower Carboniferous, and represented in Europe 

 by such plants as S. petiolata, linger, S. refracta, Goeppert, and 

 8. Devonica, Unger. Some of these plants (and this applies to the 

 one now noticed) convey the impression that they may be sub- 

 aquatic portions of Ferns bearing pinnules of different form in the 

 air. Immense numbers of leaflets, apparently of this species, are 

 scattered over certain surfaces of the St. John shales, but have not 

 yet been seen in connexion with their rachis; and one of Prof. 

 Hall's specimens from New York exhibits a stipe quite like that of 

 the present species, but with mere traces of the pinnae. 



52. Htmzn-ophtllites cxjrtilobus, sp. nov. PL XY. fig. 39. 



Bipinnate. Rachis slender, dichotomous, with divisions margined. 

 Leaflets deeply cut into subequal obtuse lobes, each one-nerved, and 

 about one-twentieth of an inch wide in ordinary specimens. 



According to Lesquereux, the genus Hymenophyllites is character- 

 istic in America of the Upper Devonian. In Europe it is rejjre- 

 sented also in the Lower Coal. I have not seen any species in the 

 Carboniferous rocks of Nova Scotia or New Brunswick. The present 

 is the only new species occurring at St. John. It resembles a gigantic 



