114 GANGAMOPTERIS. 



1883. Gangamopteris angustifolia, Tenison-Woods, Proc. Linn. Soc. New 



South Wales, vol. viii, p. 127. 

 1886. G. angmtifolia, Feistmantel, Flora Gondw. Syst., vol. iv, pt. 2, p. 33. 

 G. angustifolia, Johnston, Papers and Proc. B,. Soc. Tasmania for 



1885, p. 380. 

 1888. G. angustifolia, Johnston, Geol. Tasmania, p. Ill, pi. viii, figs. 8, 9, 19. 

 1890. G. angustifolia, Feistmantel, Mem. Geol. Surv. New South Wales, 



Pal., No. 3, p. 130. 

 1902. G. angustifolia, Arber, Quart. Journ. Geol. Soc, vol. lviii, p. 13. 



Type. No. 18, Foreign Plant Coll., Sedgwick Mus., Cambridge. 



Frond strictly linear or linear-lanceolate, margins sub-parallel, 

 unsymmetrical, acuminate, sharply contracted at the base, with 

 a well - marked median groove. Nerves anastomosing to form 

 narrow, elongate meshes. 



The Cambridge type - specimen is some 9 cm. in length, and 

 slightly more than 2 cm. wide. In shape it is linear, with almost 

 parallel sides, whereas another frond figured by McCoy 1 in 1875 

 is more lanceolate in contour. There is a broad, shallow, median 

 longitudinal groove. The lateral nerves arise by dichotomy chiefly 

 from a sub-parallel group of median nerves, and form rather close 

 meshes. 



Distribution. — Permo- Carboniferous (Glossopteris flora) : — India, 

 in the Talchir division ; New South Wales, in the Newcastle 

 Series ; Victoria, in the Bacchus Marsh Beds ; Tasmania, in the 

 Mersey River Series. 



? V. 3776^. A small linear-lanceolate leaf, about 3 cm. long, 

 occurs with other fronds on this specimen. It is difficult to decide 

 whether there is a midrib or not, consequently the attribution of 

 1 1ris specimen to Gangamopteris is somewhat doubtful. If it does 

 belong to this genus, it is probably identical with McCoy's 

 G. angustifolia. 



Mersey Eiver, Tasmania. Pres. by T. Stephens, Esq , 1898. 



4. Ganganiopteris Whittiana, Feistmantel. 



1876. Gangamopteris Whittiana, Feistmantel, Journ. Asiat. Soc. Bengal, 



vol. xlv, pt. 2, p. 371, pi. xx, figs. 3, 4. 

 1880. G. Whittiana, Feistmantel, Flora Gondw. Syst., vol. iii, pts. 2, 3, 



p. 109, pi. xliiiA, figs. 1, 2. 



1 McCoy (75), pi. \ii, fig. 1. 



