CLADOniLEBXS. 



113 



for the Indian fronds, as Feistmantel pointed out, closely resemble 

 some of tliose known from the Lower Oolite of Britain and else- 

 where. As a specific name I adopted ' Roylei i in 1901 in honour 

 of the first discoverer of this species. 



Fertile fronds of this species have been described and figured by 

 Feistmantel. Tbe sporangia are inserted on the lateral veins of 

 the leaflets, midway between the midrib and the margin. There 

 are generally from six to eight sori in each row. Feistmantel has 



Fig. 33. — Cladophlebis Roylci, Arber. After Feistmantel. A, nat. size; 

 B, a pinnule, X 2. 



concluded that these fronds belong to the Polypodiacea, although 

 the structure of the sporangia does not appear to have been made out. 



This frond is known from the llaniganj Group of ihe Damuda 

 division in India. It has also been identified from beds probably 

 of Rhsetic age in Queensland. 1 



V. 4192. Figured by Royle (33), pi. ii, fig. 4. Type. 



Royle's type is a large fragment of a frond about 18 cm. long, 

 and probably more than '20 cm. wide when perfect. The pinna? 

 are badly preserved, and the nervation is very indistinct. The 

 pinnse, of which several are seen, are alternate, and lanceolate in 

 form. The pinnules are attached by a broad base, and are rounded 

 at the apex. They average 1*2 cm. in length, and 8 mm. in breadth. 



1 Jack & Etheridge (92), p. 370, pi. xvii, figs. 3,4; Shirley (98), p. 20, 

 pi. xiii, fig-. 1. 



