LAMELLIBRANCHIATA. 89 



Plicatula minuta, H. G. Seeley, A. M. N. H. ser. 3, xvn (1866), 



p. 176. Red Chalk; Hunstanton. 

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



f. 21, 21 a, 22, 22 a, b, p. 515. Inferior Oolite; Dundry. 



Presented by the Rev. G. F. Whidborne. 



P. subserrata (Minister), 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. 

 Pseudaodnus securiformis, v. Anodontopsis securiformis. 

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



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



Foss. (1852), pi. i i, f. 5, 5 a, p. 259. Wenlock 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. 



Upper Devonian ; Marwood. 

 P. demissa (Conrad), F. McCoy, Brit. Palaeoz. 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, vn (1851), p. 60, and 



Contrib. 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. Aymestry Limestone; Aymestry. 

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



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



pi. i i, f. 19, 20, p. 261. Upper Ludlow Tilestones; Storm 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 ; Cyrn-y-Brain. 

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



Brit. Palseoz. Foss. (1852), pi. i i, f. 9, 10, p. 262. Upper 



Liidlou> ; Kirkby Moor, near Kendal. 



