242 NOTES ON THE BRITISH JURASSIC BRACHIOPODA. 



the narrow cardinal line even in the young state " (12, p. 261). 

 Eudesia is represented in this country by one species only, 

 the type, E. cardium, which may be found in the Great 

 Oolite, and Bradford-clay, of Bath, Box, Bradford-on-Avon, 

 and neighbourhood. There is a so-called variety, lechhamp- 

 tonensis, Walker, from the Inferior Oolite of Leckhampton 

 Hill, Glos., which is a very rare shell indeed. 



Flabellothyris, Eug. Deslongchamps, 1884. 

 (Type: F. fiahellum, Defrance sp.) 



Etym. — Flahellum, a small fan ; Ovpts, a small opening. 



Deslongchamps divided Eudesia into two sections, A and 

 B : in the former he placed Eudesia (Ter.) cardium ; in the 

 latter, Flahellothyris (Ter,) flahellum. This author says, 

 " Flahellothyris may be distinguished from Eudesia by its 

 more rounded form and often greater nodulosity of its plicae, 

 which are coarser and fewer in number ; and by its nearly 

 transverse shape . . . The best known form is Ter. 

 flahellum, Defrance sp. . . . This section presents a 

 well-marked transition from Eudesia to Isynenia^^ (12, p. 

 261). 



This being so, we may for the present retain the term 

 Flahellothyris* If Davidson's figure of the loop of F. fla- 

 hellum be correct, then Flahellothyris ought to be placed with 

 the short-looped Terebratuloids. (7, p. 62, PL xii. fig. 21.) 



Flahellothyris is represented in the Jurassic rocks of this 

 country by one species only, the type, a very rare and beau- 

 tiful shell ; it is found in the Bradford-clay, at Bradford-on- 

 Avon, Wilts. 



Zeilleria, Bayle, 1878. (Type : Z. coruuta, Sow. sp.) 



Etym. — Dedicated to Zeiller, naturalist. 

 The generic appellation of Zeilleria was adopted by 



