134 PROC. COTTESWOLD CLUB vol. xiii. (2) 



[Discitce]. This refers to the hemera, and it puts the 

 position of a specimen in time with extreme precision, a 

 detail very often wanting in regard to some of the earUer 

 figured specimens. Opportunity has also been taken to 

 amend certain statements of localities which were obviously 

 incorrect ; such emendation I can make from personal 

 knowledge of the specimens and of other circumstances. 



Notice may be taken of the cases wherein a figure 

 has been made from a combination of two specimens. 

 This practice would easily lead to a non-identification 

 of the types unless the facts had been carefully noted. 

 It is an undesirable practice, unless special mention be 

 made of it in the explanation of the plates. Even then 

 it is dangerous. How easily for instance, supposing 

 a figure were made from imperfect specimens, might the 

 beak of Terebratula curviconcha have been added to the 

 valves of Waldheimia haasi — two shells which are so 

 remarkably similar in external appearance, and moreover 

 occur together in the same bed. 



BRACHIOPODA: 



TYPES AND FIGURED SPECIMENS, 

 S. S. BUCKMAN COLLECTION. 



Hh3mch,onella balinensis,'Szajnocha : Davidson, Mon. Brach. (Pal. 

 Soc.) App. to Suppl. PI. XX., fig. 3, 1884. Jurassic, Inf. Ool. ; 

 Bradford Abbas, Dorset, [piscitce]. (Figured specimen). 



Rhynchonella teneckei, Haas : Davidson, Mon. Brach. (Pal. Soc.) 

 App. to Suppl. PI. XX., figs. 8-10, 1884. Jurassic, Yeovil 

 Sands ; Bradford Abbas, Dorset. YMoorei\. These specimens 

 became the types oi Rhynch. cytiica, S. Buckman, Baj. Mid-Cotts. 

 Q..J.G.S., Vol. li., p. 451, 1895: the fig. 8 of Davidson's plate 

 being taken as the Type. There were four specimens figured by 

 Davidson, his figs. 9 and <)a being from different examples. 



