118 MRS. E. M. REID 02* TWO [vol. lxxvi,. 



Ctpebace^: genus (?) sp. 4. (PL VII, fig. 26.) 



Nut elongate ovate, flattened, not stipitate, with a narrow flat 

 margin ; triangular at the apex, gradually narrowed into a style; 

 there are two coats : the inner rough, horizontally striate, the outer 

 glistening and obscurely thimble-pitted. 



Length = l - 4 mm. ; breadth='5 mm. 



CUPtlLIFER^. 



CAEprsrs laxifloea Blume. (PL VII, tigs. 27-29.) 



Nuts small, ovate, with from three to five low and broad ridges 

 bearing thread-like strands of fibres ; area of attachment small ; 

 micro pyle apical, expanding gradually into the cavity of the nut; 

 walls rather thin, woody. 



The nuts are very small. A comparison with the nuts of 

 C. Betulus shows that the largest are below the lowest limit of size 

 of this species ; nor have they the strong ridges of the species. 

 They are also smaller than any nuts of G. oriental is, though they 

 somewhat resemble them in shape. There are a number of very 

 small-seeded Chinese and Japanese species, to some of which they 

 bear a striking resemblance, the species which they most resemble 

 being " C. laxijiora (PL VII, fig. 30), a tree of the Japanese 

 mountains. In this species I have been able to match the fossils, 

 specimen by specimen, from the sheets in the Kew Herbarium. 

 I have therefore referred the fossils to the species. 



BETULACE.E. 

 Betula alba Linnaeus. (PL VII, figs. 31 & 32.) 



Length (including style) = 1"5 to 2 mm. ; breadth ="5 to # 8mm. 



Seeds of Betula occur, although in every case the wings are lost. 

 They most nearly resemble B. alba, but are rather narrow. A 

 male catkin belongs to B. alba. 



B. alba is found throughout Em'ope, Northern Asia, and North 

 America. 



Ai/ntts glutixosa Gartner. (PL VIII, fig. 1.) 



Length = 2 - 3 mm. ; breadth =2 mm. 



Seeds of Alntts agree with A. ghitinosa. Some are very small, 

 and may either be abortive, or belong to another species. 



A. ghitinosa is an inhabitant of Europe and Northern Asia. 



Alnus vibidis De Candolle. (PL VII, fig. 33.) 



Seed flat, oval, stipitate, beaked. One specimen only. 



Length=P8 to 2 5 mm. ; breadth = '8 to 2 mm. (without wing). 



This shows at the ragged edges signs that a thin wing has been 

 torn away. The evidence of such a wing, taken in connexion with 

 the size and shape of the seed, marks it as A. viridis (PL VII. 

 fig. 34). 



