LAMELLIBKANCHIATA. 89 



Plicatula minuta, H. G. Seeley, A. M. N. H. sen 3, xvii (1866), 

 p. 176. Red Chalk ; Hunstanton. 



P. soUasi, G. F. Whidborne, Q. J. G. S. xxxix (1883), pi. xv, 

 f. 21, 21a, 22, 22 a, h, p. 51.5. Inferior Oolite; Dundry. 

 Presented by the Rev. G. F. Whidborne. 



P. subserrata (Mlinster), G. F. Whidborne, Q. J. G. S. xxxix 



(1883), pi. xvi, f. 4, 5, p. 515. Inferior Oolite; Bradford 

 Abbas. Presented by the Rev. G. F. Whidborne. 



Pseudaxinus securiformis, v. Anodontopsis securiformis. 



Pterinaea ? asperula, F. McCoy, A. M. N. H. ser. 2, vii (1851), 

 p. 60, and Contrib. Brit. Pal. (1854), p. 195, and Brit. Palasoz. 

 Foss. (1852), pi. i I, f. 5, 5 a, p. 259. Weidock Shale ; Builth 

 Bridge. 



P. condor, Salter, Cat. (1873), p. 169. Lower Ludlow; Dudley. 

 Fletcher Collection. 



P. damnoniensis (Sowerby). Avicula damnoniensis, J. de C. 

 Sowerby, Trans. Geol. Soc. ser. 2, v (1840), pi. liii, f. 22. 

 Uppei' Devonian ; Marwood. 



P. demissa (Conrad), F. McCoy, Brit. Palajoz. Foss. (1852), pi. i i, 

 f. 7, 8, p. 260. Upper Ludlow ; Benson Knot. 



P. exasperata, Salter, Cat. (1873), p. 150. Wenlock Limestone; 

 Dudley. Fletcher Collection. 



P. hians, F. McCoy, A. M. N. H. ser. 2, vii (1851), p. 60, and 

 Coutiib. Brit. Pal. (1854), p. 195, and Brit. Palseoz. Foss. (1852), 

 pi. i I, f. 6, 6 a, p. 260. P. retroflexa var. hians, Salter, Cat. 

 (1873), p. 169. Ayniestry Limestone; Aymestry. 



P. megaloba, F. McCoy, A. M. N. H. ser. 2, vii (1851), p. 61, and 

 Contrib. Brit. Pal. (1854), p. 196, and Brit. Palajoz. Foss. (1852), 

 pi. i I, f. 19, 20, p. 261. Upper Ludlow Tilestones; 8torm Hill, 

 Llandeilo. 



P. pleuroptera (Conrad), F. McCoy, Brit. Palseoz. Foss. (1852), 

 pi. i I, f. 1, 2, 2 a, b, p. 261. Fig. 1, Lower Ludlow; Park 

 Lane, near Llandeilo. Fig. 2, Bala Beds ; Cym-y-Brain. 



P. retroflexa (Wahlenberg) var. naviformis (Conrad), F. McCoy, 

 Brit. Pulauz. Foss. (1852), pi. i 1, f. 0, 10, p. 262. UjJj^er 

 Ludlow ; Kirkby Moor, near Kendal. 



