ERIAN (DEVONIAN) PLANTS. 



305 



by only a few fragments, which would undoubtedly have escaped 

 the observation of ordinary collectors. 



In the collections now in my hands the following forms occur, 

 which may be considered new, though most of them are too imper- 

 fect for complete description. 



Odontopteris squamosa, sp. n. (PL XIII. fig. 17.) 



Petiole slender, bearing short pinnules placed at right angles to it, 

 and each consisting of two rounded decurrent pinnulse and a terminal 

 pinnule of triangular form. Toward the end only the terminal 

 pinnule appears. Veins obscure, diverging from a midrib, broad at 

 base. Prond apparently of a thick or coriaceous texture. 



This would seem to have been a creeping or parasitic Pern. In its 

 general habit it bears some resemblance to Cyclopteris dissecta of 

 linger, from the Devonian of Thuringia, but appears to have more 

 affinity with the genus Odontopteris than with Cyclopteris. 



Cardiopteris eeiana, sp. n. (PL XIII. fig. 18.) 



Pinnules nearly round or slightly oblong, nearly equally cordate 

 at base, somewhat crowded on a slender petiole. Length from 8 to 

 14 millim. Veins regularly spreading from the centre of the base, 

 curving toward the margin, and forking twice or thrice. 



This is the first appearance of this Lower Carboniferous genus in 

 the Devonian. The species closely resembles Cyclopteris poly <morpha 

 of Goppert, though every way smaller and more delicate. 



Arcii^opteris ?, sp. n. (PL XIII. fig. 19.) 



Petiole apparently wood}", bearing broadly obovate decurrent 

 pinnules, with strong, flabellate, straightish nerves. Pinnules over- 

 lapping each other. 



This plant bears a general resemblance to Archceopteris of the type 

 of A. {Cyclopteris) Maccoyana of Goppert ; but the woody petiole 

 or branchlet, and the coarse texture' of the pinnules, raise the sus- 

 picion that the specimen may not be a Pern, but may have belonged 

 to a coniferous tree of the type of Voltzia or Salisbury a. 



Cyclopteris, sp. 



Pragments of a very large cyclopterid leaf, with flabellate veins, 

 and which, when entire, must have been three inches in diameter. 

 It is too imperfect for description, but indicates a frond of the 

 same general character with Cyclopteris Broivnii from Peny, in 

 Maine. 



Other specimens indicate a small species of ArcJiceopteris, more 

 delicate than A. JacJcsoni; and there are some fragments which 

 seem to show, though not indisputably, that the submerged leaves of 

 Asteropliyllites latifolia were long and linear, approaching in form 

 to those previously described as A. lenta. A fragment of Hymeno- 

 pTiyllites, about the size and form of H. Gersdorffii, shows minute 

 rounded spore- cases comparable with those of the modern genus 

 Todea, which the Pern itself also closely resembles. 



