are a good deal crushed. The direction of the crushing varies so much in different 

 specimens as to indicate that the original shape of the seed must have been globose, or 

 nearly so, for seeds tend to fall on their flat faces, ot with their longer axes horizontal. 

 Of these seeds two have been crushed vertically, two laterally, and two askew. 



Seed large, irregularly globose, polygonal, or roundly ovate; surface covered 

 with large irregular knobs and ridges; raphe prominent; hilum surrounded by a thick* 

 ened ring; embryotega large. 



Length 8 mm., breadth 8 mm. Reuver. 



Compared with the recent E. ferox and the fossil E. limburgensis the seed differs, 

 in (1) the remarkable nodules with which it is covered; in (2) the character of its surface 

 sculpture, which is much finer and not so markedly pitted, and has the cells elongate 

 transversely instead of being regularly hexagonal; in (3) the structure of the testa. In 

 cross section the testa shows two coats, an outer coat formed by a single layer of pal* 

 isade*cells, which greatly resemble those of E. limburgensis, and an inner coat of many 

 layers of loose polygonal cells passing into flattened cells, which is very much thinner 

 than in either E. ferox or E. limburgensis, the relative thicknesses of the two coats in the 

 three species being 1 : 1.2; 1 : 2.5; and 1 : 4. The palisade*cells are about three times as 

 long as they are broad, the walls are very thick and the cavity very small, the transverse 

 breadth of the cavity being scarcely twice the thickness of the wall. 



We have not been able to compare E. nodulosa with actual specimens of 

 E. europaea Weber, but a comparison with Dr. Weber's figures and description shows 

 that his E. europaea is smaller, is not nodular, has the palisade cells square or nearly 

 so instead of being elongate radially, and the proportion of palisade cells to inner coat 

 is about 1 : 3.5. 



EURYALE LISSA Sp. nov. 

 PI. VII, figs. 11-13. 



Semina obovata, laevia, nitidiuscula; hilum embriotegam haud attingens; 

 embryotega depresso*conica, immersa; testa foveolis minutissimis irregulariter sex* 

 angulis marginibus crenulatis instructa. 



Seed obovate, smooth rather shiny; raphe fairly prominent; hilum not reaching 

 to embryotega; embryotega sunk depressedly conical; testa under high magnification 

 shows externally small irregularly hexagonal pits with crenulate margins, which gives 

 the surface a finely granulate texture. 



Length 7 mm., breadth 6 mm. Brunssum. 



Only two seeds have been found. One is compressed laterally, but is perfect 

 except for the absence of the embryotega; the other is crushed vertically, and is a little 

 broken round the embryotega, but the embryotega is in place. This species approaches 

 most nearly to the Russian E. europaea; but is larger, more ovate, not truncate, and the cell* 

 walls seen on the surface of testa are crenulate, not smooth as figured by Dr. C. A. Weber. 

 In section the testa shows a very thin palisade layer about 3 /5 the thickness of this layer 



88 



