130 SPHEXOPTKRIS. 



A single species only has been ascribed, I believe, to this 

 genus, occurring in India, and also in the Rhsetic beds of Tonquin. 

 A description of the latter specimens has been recently published 

 by Zeiller, 1 and the present account is largely based on his extended 

 diagnosis. 



Palseovittaria Kurzi, Feistmantel. 



(Text-fig. 30.) 



1876. Paieeovittaria Kurzi, Feistmantel, Journ. Asiat. Soc. Bengal, vol. xlv, 



pt'. 2, p. 368, pi. xix, figs. 3, 3r?, 4, 4a. 

 1880. P. Kurzi, Feistmantel, Flora Gondw. Syst., vol. iii, pts. 2, 3, p. 91, 



pi. xlivA. 

 1890. P. sp., Schimper, in Zittel, Handb. Palaeont., pt. 2, p. 133. 

 1902. P. Kurzi, Zeiller, Flore Foss. Gites Charb. Tonkin, p. 81, pi. xvi, 



fig. 1. 



Type. Nos. 5325-6, Mus. Geol. Surv. India, Calcutta. 



Frond oval lanceolate or oval-spathulate, 12-15 cm. long, and 

 2-5-4-5 cm. broad, rounded at the apex. Median nerve scarcely 

 visible, except in the basal portion of the frond, but indicated by 

 a median fold. Lateral nerves very erect, spreading, a little 

 incurved at the margin, simple or dichotomising once or twice, to 

 the number of eight or ten in a centimetre of length. 



The fine specimen figured by Feistmantel shows nine very perfect 

 fronds arranged as if springing from a common point of attachment. 

 Nothing, however, is known of the mode of attachment, nor of the 

 stem which bore these fronds. The fructification is also unknown. 



Tbis species is recorded from the Kaniganj Group of the Damuda 

 division in India, and occurs in rocks of Triassic age in Tonquin. 



Kot represented in the British Museum collection. 



Genus SPHENOPTERIS, Brongniart, 1822. 

 [Mem. Mus. d'Hist. Nat., vol. viii, p. 233.] 



Compound fronds, hi-, tri-, or quadripinnate, deeply or finely 

 divided. Pinnules usually small or, more rarely, of medium size, 

 as a rule more or less deeply divided, lobed, or dentate, rarely 

 entire, conti acted at the base. Median nerve of each pinnule 



1 Zeiller (02 3 ), p. si. 



