122 T.ENIOrTERIS. 



a direction nearly at right angles to the midrib. Nerves numerous, 

 somewhat distant, strong, dichotomising once, or more rarely twice. 



The broad form of the frond, and the somewhat distant and 

 coarse lateral nerves, form the chief characteristics of this species. 

 The veins are at least 1 mm. apart. 



This frond was originally referred to the genus Ghssnpteris by 

 Royle, but M'Clelland, in 1850, transferred it to Tceniopteris. 

 More recently, several authors, including Feistmantel, have adopted 

 Sehimper's generic name Macrotceniopteris for this species, which, 

 as has been already pointed out, is a term of doubtful value. The 

 chief characters distinguishing Macrotceniopteris from Tceniopteris 

 appear to be the larger size of the frond — a point of but little 

 importance — and the more distant secondary nerves. 1 



There is also an obscure fragment, the only specimen of its kind 

 known from the Damuda Series, which was originally described by 

 M'Clelland 2 as Zamia lurdwanensis. This specimen, preserved in 

 the Calciitta Museum (No. 5340), was refigured by Feistmantel 3 

 as Pteroplujllum burdwanense. It would appear doubtful if this 

 is really a Cycadean frond. So far as one can judge from 

 Feistruantel's drawing, it would seem more probable that it may 

 be after all only a torn fragment of a frond of Tceniopteris, 

 a conclusion supported by the irregular margin of the supposed 

 pinnules, as shown in the drawing referred to above. 



Tceniopteris danceoides occurs in the Raniganj and Earakar Series 

 of the Damuda division in India. 



V. 4191. PI. V, Fig. 1 ; also figured by Eoyle (33), pi. ii, 

 fig. 9. Type. 



A fine specimen of a nearly complete oval-lanceolate frond, the 

 apex being wanting. It measures 13 cm. in length, and 6 cm. 

 across at the widest part. The midrib is stout, and the veins, 

 which are very clear, arise almost at right angles to the midrib, 

 remaining simple or branching dichotomously. There is no regular 

 alternation between the simple or branched veins. 



Bardwan Coalfield, India. 



1 Arber (01), p. 548. 



3 M'Clelland (50), p. 53, pi. xiv, fig. 4. 



3 Feistmantel (80), p. 116, pi. xlviiA, fig. 1. 



