WILLIAMSONIA. 191 



1876. ? Ptilophj/llum cutcheuse, Feistmantel, Pal. Ind. pis. iv.-vi. 



1877. ? Ptilozamites acutifoUa, Feistmantel, Pal. Ind. (77'), pi. xl. p. 65 ; 



{77'),pl.ii.; {77'),pl.y. 

 ? Ftilopliyllwn. catchense, ibid. (77*), pi. vi. 



Cf. P. tenerrimum, ibid. (77'), p. 66, pi. xli. 

 ? Otozamites gracilis, ibid. (77'), pi. vii. 

 ? 0. angustifolius, ibid. pi. vii. 

 Cf. 0. distans, ibid. pi. vii. 

 1879. Falaozamia acutifolium, Feistmantel, Pal. Ind. (79), pis. x. etc. 

 FtiUphyllum cutchense, ibid. pis. ii. and ix. 

 Otozamites Hislopi, ibid. pi. vii. fig. 4. 

 1881. Otozamites angustifoUus, Heer, Secc. Trab. Geol. Portugal, pi. ix. 



fig. 12. 

 1883. Cf. Ftilophyllum oligoneuron, Tenison-'Woods, Proc. Linn. Soc. N'.S.'W. 



vol. viii. pi. vii. figs. 2 and 3. 

 1890. FterophijUum peeten, Schenk, in Zittel, p. 223. 

 1892. William-sonia peeten, Fox-Strangways, Tab. Foss. p. 142. 

 JV. hastula, ibid. 



Of. Ftilophyllum oligonmron. Jack & Etberidge, Geol. Queensland, 

 pi. xvi. fig. 2 ; pi. xviii. fig. 11. 

 1900. , Williaimoma peeten, Seward, Manchester Lit. and Phil. Soc. vol. xliv. 

 p. 20, pi. iii. fig. 6. 



Frond pinnate, long and narrow ; uniform in breadth, and 

 Tariable as regards tlie shape and size of the pinnae. The crowded 

 pinnae are attached to the upper face of the rachis at a more 

 ^r less acute angle ; the bases of the pinnse are either of the 

 .^ame breadth as the rest of the lamina and have rounded corners 

 or, in some cases, the upper edge of the base is slightly expanded 

 as a basal lobe similar to the aurioulate base of an Otozamites 

 pinna. The pinnse vary in shape : some are short and comparatively 

 broad, while others are long and narrow (vide PI. III.), their 

 apices are either gradually tapering and acuminate, or the upper 

 margin may be almost straight and the lower edge suddenly curved 

 upwards to the pointed tip. The veins are spreading at the base 

 of the pinna and approximately parallel through the greater part of 

 the lamina. The petiole is slightly expanded laterally towards the 

 .base, which separates by a clean-cut absciss-layer from the stem 

 .(vide PI. III. Fig. 7). 



The flowers appear to be of the same type as those of 

 WilUamsonia gigas, but of smaller size, and characterized by the 

 shorter and proportionately broader linear acuminate or lanceolate 

 bracts. The York Museum contains a specimen very similar to 

 that shown in Text-fig. 32. 



