156 SUPPLEMENT TO THE BRITISH 



131. Terebratula Buckmani, var. Bucicmaniana, Walker. Sup., PI. XIX, figs. 14 — 17. 



This variety occurs at Cleeve Hill and in the Gryphsea-grit of Leckhampton Hill. 

 It differs from the type (PI. XIX, fig. 13) in being less regularly ovoid, widening towards 

 the front margin. The smaller or dorsal valve is flatter and slightly compressed towards 

 the sides of the lower third of the shell. In some examples it is also more or less Impli- 

 cated towards the front. The ventral valve is widest about the centre of the shell with, 

 in some specimens, a rounded median fold with two lateral depressions. Beak incurved 

 and truncated by a circular foramen overlying the umbone of the opposite valve. Front 

 margin straight or slightly bisinuated. 



132. Terebratula Phillifsii, var. Y nii,Li?si as a, Wal/cer. Dav., Sup., PI. XVII, fig. 23. 



A broad flat variety, which occurs in the Inferior Oolite of Cleeve Hill, Gloucester- 

 shire. 



133. Terebratula intermedia, var. LANGTONENSis,F«//£<?r, MS. Dav., Sup., PI. XVIII, 



fig. 14. 



This variety does not appear to have attained more than half the size of T. intermedia. 

 It is very abundant in the Cornbrash of Langton Herring, near Weymouth, where it is 

 associated with Bh. Boueti. It has also been found by Mr. Darell Stephens in the 

 Bradford Clay of Burton Bradstock with Ter. coarctata, Wald. digona, and Bh. Boueti. It 

 is only a small race or variety of T. intermedia. 



A small well-marked variety of Terebratula perovalis occurs also in the Gryphsea- 

 grit of Leckhampton Hill (Sup., PI. XVIII, figs. 10 — 13). This agrees in all respects, 

 except in size, with the large T. perovalis, var. ampla of Buckman (Sup., PI. XXV, 

 figs. 1, 2), which is so abundant in the Inferior Oolite of Bradford Abbas in Dorset. Some 

 specimens of these last measured 3 inches 2 lines in length, by 2 inches 9 lines in breadth 

 and 1 inch 9 lines in depth. 



134. Terebratula (?) Walfordi, Dav. Sup., PL XIX, figs. 18, 19. 



Shell marginally longitudinally oval, broadest posteriorly. Dorsal valve very slightly 

 convex, almost flat and even, sometimes slightly depressed longitudinally. Ventral valve 



