dU 



Dr. J. E. Diiciden on (he Iitlii(ioui,/nps 



¥. Freeh (1885) has also described and figured a new trt>nus 

 and species of Kugose coral, Decaphyllum Koeneni, in which 

 the smallest s])ecimens possess six large and six snjall alter- 

 nating septa, exactly recalling the profoseptal stage of modern 

 hexanierous corals. In the fully developed cor;illites an 

 additional pair of septa has appeared within the two primary 

 systems towards each axial border. Freeh consider^ two 

 opposite members of the smaller cycle to represent the main 



Fio. 10 



Diagraniniatic lepreseutation of the superficial ridges and grooves of the 

 same coral as before, seen from the convex aspect. The coral is 

 f^upposed to be laid open along its concave border and then flattened. 

 Tiie main septum is lepresented by the middle line and tlie counter 

 septum by the boundary line at each lateral extremity of the figure. 

 The other septa are as before, only the order is reversed. 



(Hauptscptum) and counter (Gegenseptum) septa, and 

 attempts to derive the later stages according to Kunth's law 

 of septal increase. Considering the septa, however, from the 

 standpoint of modern coral morphology, the members of the 

 small cycle are undoubtedly cxosejjta, and can scarcely be 

 regarded as axial or possess much value as indicating septal 

 sequence. 



In a later paper Freeh (LSSo") has attempted to derive a 

 primary teliameral se|)tal ])hMi Irom the different mesenterial 



