CAEPOLIIHES. 19 



In habit and venation the fronds resemble recent species of 

 the Malayan and Indian genus Dipteris. 



Sori numerous, circular, composed of a small number of annulate 

 (sporangia. 



The best figures of Clathropteris are those recently published in 

 Zeiller's excellent Atlas of Tonkin plants ; ' drawings of the sori 

 and sporangia are given in Schenk's work on the Eheetio plants 

 ■of Franconia. 



V. 3399. PI. III. Pig. 2. 



A fragment exhibiting the characteristic venation characters of 

 Ooppert's widely distributed Ehaetic species. The torn piece of 

 lamina is traversed by several secondary veins which spring from 

 one of the main ribs of the frond, and these are connected by 

 tertiary veins. 



Bristol. Broiie Coll. 



GYMNOSPEEM^. 



Genus CARPOLITHES. 



Carpolithes, sp. 



Fig. 1. — Carpolithes, ST^. V. 3400. Nat. size. 



V. 3400. Text-fig. 1. 



This specimen, represented natural size in the figure, may be 

 the impression of a winged seed. It consists of a darker central 

 region, with two broad and thin lateral expansions of lighter 

 colour, which are probably membranous wings. The wings exhibit 

 transverse ridges, which may be due to the contraction and 



Zeiller (02), pis. xxvii.-xxxiv. 



