386 MR ROBERT KIDSTON ON THE FOSSIL FLORA OF THE 



niart's plant creates a new species, which he places in the genus Danceites 

 under the name of D. sarepontanus* I am, however, of opinion that Dr Stur 

 is in error in separating Brongniart's figure from Aleth. aquiline/, Schloth., sp. 



It is doubtful if the plant figured by Geinitz as Aleth. aquilina belongs to 

 Schlotheim's fern.t 



One specimen from Radstock, 10^ inches long, shows portions of fifteen 

 pinnae on the left side of the rachis and eleven on the right, the most perfect 

 of which is b\ inches long. 



Localities : — Radstock ; Wellsway Pit ; and Braysdown Colliery. 



Alethopteris obliqua, Brongniart, sp. 



Alethopteris obliqua, Schimper, Traite d. paleont. veget., vol. i. p. 557. 

 Pecopteris obliqua, Brongt., Hist. d. veget. foss., p. 320, pi. xcvi. figs. 1-4. 



Remarks. — I have received from Mr George West, Camerton, a small 

 specimen of a fern showing two pinnae which agree entirely with Brongniart's 

 figs. 3, 4, the originals of which came from Oldham. 



Alethopteris Davreuxi, Brongniart, sp. 

 Plate XXIV. fig. 1. 



Alethopteris Davreuxi, Gopp., Syst. fil. foss., p. 295 (excl. syn.). 



Alethopteris Davreuxi, Zeiller, Bull. soc. geol. d. France, 3 e s&\, vol. xii. p. 199; Flore foss. d. 



Bassin houil. d. Valenciennes, pi. xxxii. fig. 1. 

 Pccojpteris Davreuxi, Brongt., Hist. d. veget. foss., p. 279, pi. lxxxviii. 



Description. — Frond large, heterophyllous; primary and secondary pinnae 

 alternate; pinnules alternate. Secondary pinnae on upper part of frond entire 

 or more or less lobed, and united by their basal portions ; secondary pinnae on 

 basal part of lower primary pinnae, free and divided into many pairs of alternate 

 pinnules. Pinnules oval or subrotund, united among themselves, the lowest 

 inferior pinnule occupying the angle formed by the union of the rachis of the 

 secondary and primary pinnae. Terminal lobe oblong. The central vein in the 

 pinnules is prominent in its lower part, and gives off numerous upward- 

 directed once-divided veinlets. A few simple or dichotomous veins also 

 enter the pinnules direct from the rachis. In the entire and lobed pinnae the 

 veins are fascicled and divided several times. 



Remarks. — The specimen figured on Plate XXIV. fig. 1, has been kindly lent 

 me for description by the Council of the Bristol Museum. It shows the remains 

 of six primary pinnae (numbered i.-vi.) on the left of the rachis and two on 

 the right (numbered vii., viii.). The position of the rachis which has borne 

 these pinnae, and of which very little remains, is indicated by an arrow. The 

 primary pinnae i.-ii. bear quite entire secondary pinnae; the lateral veins in these 

 are slightly fascicled. On the primary pinnae iii., the lower secondary pinna: 



* Carbon-Flora, p. 223, pi. lxi. fig. 2. f Vers. d. Steinhf. in Sachsen, p. 27, pi. xxxi. figs. 5-7. 



