XXVIl] NEUROPTERIDIUM 521 



Neuropteridium validum. (Feistmantel^). Fig. 348. 



1869. Odontopteris Plantiana, Carruthers, Geol. Mag. Vol. vi. p. 9, 



PI. VI. figs. 2, 3. 

 1878. Nevropteris valida, Feistmantel, Mem. Geol. Surv. India, Foss. 



Flor. Gondwana Syst., Vol. iii. p. 10, pi. ii. — vi. 

 1880. Neuropteridium validum, Feistmantel, Ibid. 2, p. 84. 



The specimen represented in fig. 348 illustrates the main 

 features of Neuropteridium, validum. This species is referred to 

 by Dr White ^ as N. Plantianum on the ground of priority, and 

 with a view to perpetuate the name of the English engineer 

 Nathaniel Plant who discovered the species in a Brazilian Coal- 

 field in the province of Rio Grande do Sul. Feistmantel's specific 

 name is however retained as being much better known. An 

 examination of Mr Plant's specimen in the British Museum 

 led me^ to speak of the Brazilian species as identical with 

 If. validum described by Feistmantel from Lower Gondwana 

 rocks of India. Zeiller* had previously drawn attention to the 

 resemblance between the two sets of specimens. The frond of 

 N. validum may exceed 50 cm. in length. The lower pinnules 

 may be entire and semicircular in form while the upper and 

 larger segments, which may reach a length of 5 or 6 cm., are 

 characterised by broad lobes (fig. 348). 



This type is represented in the flora of the Talchir- 

 Karharbdri series (Lower Gondwana) of India ^ in Permo- 

 Carboniferous rocks of Brazil and Argentine ^ and in the 

 sandstones of Vereeniging on the borders of the Transvaal 

 and Cape Colony. It is a characteristic member of the Glossop- 

 teris Flora and occurs in association with Glossopteris and 

 Gangamopteris. 



Neuropteridium interm,edium (Schimper). Fig. 349. 



This species has been figured by Schimper and Mougeot^ 

 from the Bunter of the Vosges and more fully described by 



1 See Arber (05) p. 116 ; Seward (03) p. 85. 



2 White (08) p. 483. » geward (03) p. 83. * Zeiller (95) p. 616. 

 » Feistmantel (79). « Kurtz (94). 



' Schimper and Moxigeot (44) A. PL xxxviii. 



