548 Dtitt. — Pityostrobus macrocephalus , L. and H. 
pollen-grains, both germinated and ungerminated, have been found collected 
at the tip on the external surface. 
The prothallus is large and well rounded, but from only two of the 
ovules were fossil embryos recorded. These were large and, apparently, of 
a normal polycotyledonous type. 
It is concluded that the cone has closer affinities with Pinns excelsa, L., 
than with any other existing Conifer* 
Literature cited. 
1. Aase, H. C. : Vascular Anatomy of the Megasporophylls of Conifers* Bot. Gaz*,vol. lx, 1915. 
2. Carruthers : On some Fossil Coniferous Fruits. Geol. Mag., vol. iii, pp. 534-46, Pis. XX, 
XXL London, 1866. 
3. Corda, A. J. : in Reuss, Die Versteinerungen der bohmischen Kreide-Formation, Bd. ii, 1846. 
4. Endlicher, S. : Genera Plantarum, p. 72, 1836. 
5. Gardner, J. S. : Monograph of the Brit. Eocene Fiora, vol. ii, 1886. 
6. Goeppert, H. R. : Uebersicht der Schlesischen Gesellschaft, p. 128, 1844. 
7. Lindley, J., and Hutton, W. : The Fossil Flora of Great Britain, vols. i-iii. London, 1831-7. 
8. Miquel : Monographia Cycadearum. 1842. 
9. : Prodromus Systematis Cycadearum. 1861. 
10. Morris, J. : Annals of Nat. History, Ser. 1, vol. vii, 1841. 
10 a. Oliver, F. W., and Scott, D. H. : On the Structure of the Palaeozoic Seed Lagenostoma 
J.omaxi. Phil. Trans. Roy. Soc.* Lond., Ser* B, vol. 197, 1904, pp. 193-247. 
11. Presi. : in Sternberg, Versuch einer geognostisch-bot. Darstellung der Flora der Vorwelt, 
Teile 7, 8, 1838. 
12. Radais, M. L. : Anatomie comparee du fruit des Coniferes. Ann. Sci. Nat*, Bot., Ser. 7, 
vol. xix, 1894. 
13. Stopes, M. C. : Catalogue of the Cretaceous Flora, British Museum. Pt. II, 1915. 
14. Thomson., R. B. : Comparative Anatomy and Affinities of the Araucarineae. Trans. Roy 
Soc., Lond., Ser. B, vol. 204, 1914, pp. 1-50. 
15 Tubeuf, F. von : Beitrag zur Kenntn. der Morphologie, Anat. und Entw. des Samenfliigels bei 
den Abietineen. Diss., Miinchen, 1892. 
16. Unger, F. : Genera et Species Plantarum fossilium. Vienna, 1850* 
explanation of plate XV. 
Illustrating Mr. C. P. Dutt’s paper on Pityostrobus macrocephalus. 
The specific names are those attached to the original specimens. 
Fig. 1. P . macrocephalus. External appearance of cone in the Sedgwick Museum, Cambridge. 
About nat. size. 
Fig. 2. P. macrocephalus . Nearly median longitudinal section of cone in the Cowderoy Col- 
lection. Basal scales with large apophyses. A, Ovule seen in Fig. 7, V 11001 b. About nat. size. 
Fig. 3. P. macrocephalus. Median longitudinal section of same cone as in Fig. 2. b, Ovule 
seen in Fig. 8. W., base of seed wing; M., megaspore. Cowderoy Collection, V 11001 c. 
x about ijr. 
Fig. 4. P. ovatus. Tangential longitudinal section near base of cone. Ovuliferous scales 
bearing paired ovules; b.s. } bract-scale. Cowderoy Collection, V 11003 d. 
