216 NOTE ON A NEW FOSSIL PLANT, 



Plate XXIV. {continued). 

 Fig. 16. Staurastrum tr achy not um, West., var. cumulation, West. 400/1. 



17. Xanthidium apiculzferum, West. 625/1. 



18. Cosmarium Meneghinii, Breb., var. Wollei, Lagerh. (forma raonstrosa). 



400/1. 



19. Arthrodesmus triangularis, Lagerh., forma. .400/1. 



20. Penium suboctangulare, West. 400/1. 



21. Cosmarium suhprotumidum, Nord,, forma. 625/1. 



22. ,, obsoletum, Reinsch, var. angztstatum, West. 400/1. 



23. 



•» 



West 



West. 400/1. 



24. „ arctoum,^sord., f. minor, West. 400/1. 



25. „ cucurbita, Breb., f. major, West, 400/1. 



26. Zygogo7iium momoniense, West. 400/1, 



Supplementary Note on a new Fossil Plant, 

 by Thomas Hick, B.A., B.Sc. (ante, p. S6> 



To avoid any possible confusion with Tylophora, K. # r •> 

 Mr. Hick proposes to withdraw the name given on p. 101 y 

 and to substitute for it Xenophyton, from £eros, strange, and 

 (f>vTOP 9 plant, to indicate the curious structure of the plant ; the 

 species will therefore be henceforth known as X. radiculosa. 



