CAULOPHACUS SCHULZEI. 

 DISCOCOMES. 



63 



the main-rays, from which the bunches or verticils of end-rays arise, is very 

 (different in discocomes of different size (Plate 10, figs. 17-25) ; long and conical 

 in the large ones (Plate 10, figs. 19-21), and short and more disc-shaped in the 

 small ones (Plate 10, figs. 22-25). 



In consequence of all these differences the large discocomes differ from the 

 smaU ones very considerably in appearance; they nevertheless represent a fairly 

 continuous series of forms. 



Some of the small discocomes here considered, like those less than 70 /^ in 



