I90I S. S. BUCKMAN— BRACHIOPODA 289 



PLATE XII. 



Murchisonce hemera 

 Figs, i— 3.— Pseudoglossothyris simplex (/. Buckmati). 



Three views of an unusually large specimen showing small plications 

 as a character of maturity. Pea Grit, Birdlip, (Ludwigian Age). 

 (P. 241). 



Bradfordensis hemera 



Figs. 4 — 7. — Terebratiila polyplecta, S. Buckman, sp. n. 



Four views of a specimen showing well-established plications as a 

 character of maturity, and thickening of margin as a character of 

 senility. Oolite Marl, Notgrove Station, Gloucestershire, (Ludwigian 

 Age.) (P. 242). 



MtirchisoncB hemera 



Figs. 8 — 12. — Terebratula withingtonensis, 5. Bi/ckman, sp. n. 



Three views (figs. 8 — 10) of a uniplicate example. Fig. 11, marginal 

 view of an incipiently biplicate specimen. Fig. 12, same view of a 

 definitely biplicate example. Pea Grit, Railway Cuttings, Withington, 

 Gloucestershire, (Ludwigian Age). (P. 246). 



Falciferi hemera 



Figs. 13—15. — Rhynchonella standishensis, S. Buckman, sp. n. 



Three views of a specimen showing plicae only as an adult character. 

 Upper Lias Clay, Standish Park Farm, Gloucestershire, (Harpoceratan 

 Age). (P. 245). 



