I90I 



S. S. BUCKMAN— BRACHIOPODA 



263 



ISOCHRONOUS 

 (more or less) 



HOMCEOMORPHS 



HETEROCHRONOUS 



Aulacothyris Haasi 

 Glossothyris cnrvicoiicha 



Terebratula suhpitnctata 

 Zeilleria siibnu/nismalis 



Zeilleria ctrcularis 

 Terebratula anipla (juv.) 

 Pseudoglossothyris Lecsi 



Zeilleria Lycetti 

 Fseudoglossothyris sp. 



Zeilleria biillata 

 Terebratula sp. 



Zeilleria ferruginea 

 Terebratula sp. afF. Terebr. 

 Buckmani 



Terebratula imitator 

 Zeilleria biconiis 

 Zeilleria subcornuta 



Pseudoglossothyris cunnfrons 

 Aulacothyris alveata 



Microthyris lagenalis 

 Terebratula subpunctata 



Zeilleria ferruginea 

 Terebratula Buchnaniana 



Zeilleria anisodiues 

 Terebratula subomalogaster 



Zeilleria ornithocephala 

 Terebratula Buckjuani 



Terebratula sphcBroidalis 

 Zeilleria bullata 

 Zeilleria Marice 

 Zeilleria perobovata 



VIII. Summary 



Species of Jurassic Brachiopods dissimilar internally, or 

 in regard to particular features, but similar in general aspect, 

 or developing a certain similarity in general features, have 

 been noticed in this paper as homceomorphs. 



The following new genus has been proposed : — Pseudo- 

 glossothyris. 



The following species have been noticed ; those printed 

 in heavy type are new ; those marked with an asterisk are 

 figured in this paper. 



S 



