XXXV] SAMABOPSIS 351 



sent to Dr Kidston by Mr Claypole. The whole seed is 5 cm. 

 wide and 3-5 cm. in depth; it is characterised by a short and 

 relatively broad nucule surrounded by a very broad and flat 

 border showing faintly marked radially disposed lines and in 

 places some irregularly distributed pits. The apex is emarginate 

 and there is a broad and deep sinus in the sarcotesta in the chalazal 

 region. The seed resembles Samaropsis alata Kidst.^ and S. 

 Baileyi (Daws.)^ but it differs from these in the greater breadth of 

 the 'wing' and in the form of the nucule. 



The seed described by Fiedler* as Jordania bignonioides (fig. 

 502, I) agrees closely with S. alata Kidst. but is probably speci- 

 fically distinct. 



Samaropsis barcellosa (White). 



White* described this species (fig. 502, G) from Permo-Carboni- 

 ferous rocks in Brazil (Eio Grande do Sul) as Cardiocarpon barcel- 

 losum. The nucule is said to be cordate but, as seen in the figure, 

 there is no clear indication of a basal sinus: the presence of a 

 relatively broad ' wing,' as White says, entitles the seed ' to a place 

 in the Samaropsis section of the genus.' The author of the species 

 compares it with seeds described from Westphalian rocks in 

 Ohio* and Pennsylvania*. It is interesting to find a type which 

 is common in both Europe and North America in the western 

 portion of Gondwana Land. Seeds of similar form are recorded 

 also from India, South Africa, and Australia'. 



Samaropsis Seixasi (White). 



This BraziUan species from the same beds is described by 

 White as Gangamopteris {Samaropsis) Seixasi^ : it is characterised 

 by a small ovate nucule 8 — 10 mm. long and 5 mm. broad, in some 

 specimens surrounded by a complete 'wing' extending above the 

 apex and below the base, giving the seed an appearance similar to 



1 Kidston (11) p. 239, PI. xn. fig. 1. 



2 Dawson (71) A. PI. xix. fig. 219; Stopes (14) p. 92. 



3 Fiedler (57) PI. xxvin. fig. 36. 



^ White (08) B. p. 567, PI. x. fig. 11. 



' Newberry (73) PI. XLm. fig. 8; Lssquereux (80) A PI. lxxxt. figs. 36, 37. 



" Lesquereux (84) A PI. oix. figs. 13, 15. 



' Seward (97^) A p. 332; Arber (05) B. pp. 206, 207. 



s White (08) B. p. 559, PI. x. figs. 5—8. 



