231 



HOMCEOMORPHY AMONG JURASSIC 

 BRACHIOPODA, 



BY 



S. S. BUCKMAN, F.G.S. 



(Read May 2nd, 1899) 



PLATES XII, XIII. 



I. Introduction 



II. Methods of Development 



III. Independent Development of the Multiplicate 



Character 



IV. Independent Development of Biplication 



V. Pseudobiplicate (Bilobate) Series 



VI. NoN- plicate Homceomorphs 



VII. Notes on Certain Species 



VIII. Summary 



IX. Appendix I. On Photographic Reproduction... 



X. Appendix II. A Jurassic Time Table 



I. Introduction 



p. 231. 

 p- 233- 



240. 

 246. 

 249. 



257- 

 261. 

 263. 

 264. 

 265. 



The discovery of a multiplicate Brachiopod belonging 

 to the Terebratiila-galeiformis series, brought to the 

 notice of the Club by Mr Upton,* is particularly interest- 

 ing. It is a further, and as it happens, very striking 

 example of the phenomenon known as parallelism of 

 development. Thereby is produced what I have called 

 homoeomorphy — that is to say, the phenomenon of 



* "Some Cotteswold Bracliiopoda," Proc. Cotteswold Club, Vol. xiii., p. 121 ; if 



