166 DR ROBERT KTDSTON ON THE 



and show very clearly the distinctive characters between Hexagonocarpus and 

 Trigonocarpus. 



There is no definite locality given for the specimen figured by Hooker, but it was 

 said to be in the collection of the late Mr John Gray, of Dudley, and occurred in a 

 nodule of iron pyrites. 



Hexagonocarpus Hookeri is very rare in the South Staffordshire Coal Field, and 

 the only locality from which I have seen specimens is that mentioned below. 



Horizon and Locality. — Ten-foot Ironstone Measures : Clayscroft Openwork, 

 Coseley, near Dudley. 



Gymnospermese. 

 Whittleseya Newberry. 



The genus Whittleseya has been referred by some to the Ginkgoacese or 

 Salisburiacese, and the evidence for and against this position being accorded it has 

 been fully discussed by Seward and Gowan, # and by White, t 



It might, however, be stated that this suggested affinity of Wliittleseya rests entirely 

 upon the form and structure of the leaves, and therefore does not stand on a sure basis. 



If I am correct in referring the fossils described here under the name of Whittleseya 

 l.fevtilis to that genus, then its affinities appear to be rather with the Cycads than 

 with Ginkgoacese. 



Whittleseya elegans Newberry. 



1853. Whittleseya elegans, Newberry, Ann. of Sci. of Clevel., vol. v. No. 1, p. 116, figs. 1, 26. (Fide 



Lesquereux.) 

 1879. ,, „ Lesquereux, Coal Flora, vol. ii. p. 523, pi. iv. figs. 1, la. 



1885. 

 1900. 

 1901. 

 1904. 

 1912. 



Renault, Cours de botan. foss., vol. iv. pp. 69 and 193, pi. v. figs. 9, 10. 

 Zeiller, Elements de paleobot., p. 250, fig. 176. 

 White, Ottawa Naturalist, vol. xv. No. 4, p. 110, pi. vii. fig. 5. 

 Potonie\ Abhild. u. Beschreib. foss. Pflanzen, Lief. ii. No. 40, figs. 1-4. 

 Thomas, Palaeobot. Zeitschrift, vol. i. p. 46, text-figs. 1, 2. 



Remarks. — The only British specimen yet discovered, as far as I am aware, is 

 that figured and described by Mr H. Hamshaw Thomas, J and which was found by 

 Mr S. P. Heath. 



Horizon and Locality. — Ten-foot Ironstone Measures. Contained in an ironstone 

 nodule from Doulton's Clay Pit, near Dudley. 



Whittleseya (?) fertilis Kidston, n. sp. 



PL XV. figs. 1 to 10. 



Description. — Sporangial structure formed of two dentate, cuneate, scale-like parts, 

 with many strong parallel veins and upper angles slightly rounded and infolded, basal 



* Ann. of Hot., vol. xiv. p. 138 ; see also pp. 135-147. 



t Ottawa Naturalist, July 1901, pp. 106-110 ; see also Scott, Studies, 2nd ed., part ii. p. 611, and Zeiller, Elements 

 d. pale'obot., p. 247. J Loc. cit. 



