Endocarp roundly triangular and bluntly pointed, ventral margin slightly 

 curved, dorsal margin nearly semicircular, apex terminal; sculpture sharp thin ridges 

 becoming duplicated at the dorsal margin. 



Length 2.3 mm., breadth 1.7 mm. Reuver. 



The endocarp is now quite flat, but this may be the effect of crushing; the 

 Saxatiles have usually tumid endocarps. 



PRUNUS SPINOSA Linn. 

 PI. IX, fig. 21. 



Endocarp roundly obovate, blunt, somewhat compressed; sides covered with 

 large shallow pits or dents. 



Length 10.0 mm., breadth 8.5 mm. Swalmen, Brunssum? 



We have only seen one specimen of this form, though two or three others, 

 smaller and not so well preserved, may be varieties of the same species. One doubtful 

 specimen has been found at Brunssum. 



PRUNUS cf. SPINOSA Linn. 

 PI. IX, figs. 22, 23. 



Two specimens of a plum allied to P. spinosa, have been found at Reuver. 



Endocarp compressed, broadly ovate, pointed above and below, sharply keeled; 

 side reticulate or dented; walls moderately thick. 



Length 8.0 mm., breadth 6.5 mm. Reuver. 



The material is insufficient to allow us to say more about this species. Its com* 

 pressed pointed form suggests an approach to P. domestica; but it is much smaller, and 

 the compression may be due largely to crushing. 



PRUNUS cf. SPINOSA Linn. 

 PI. IX, fig. 24. 



Endocarp small, nearly flat, round or somewhat oval slightly pointed; striate 

 near hilum and reticulate or dented above; thin*walled ; keel very wide. 



Length 7.0 mm., breadth 6.0 mm. Reuver. 



Only two specimens of this species have been seen, both from Reuver. The small 

 size and very wide keel distinguish it from any form of P. spinosa that we have seen. 



PRUNUS Sp. 4. 



PI. IX, fig. 25. 



Endocarp elongate*ovate, tumid, pointed above and below; striate towards the 

 hilum, elongate*reticulate above; bluntly keeled. 



Length 8.0 mm., breadth 4.0 mm. Reuver. 



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