LAMELLIBRANCHIATA. 89 
Plicatula minuta, H. G. Secley, A. M. N. H. ser. 3, xvi (1866), 
p. 176. Red Chalk ; Hunstanton. 
P. sollasi, G. F. Whidborne, Q. J. G. S. xxx1x (1883), pl. xv, 
fe 2l 21, a, 22,)22:a; b, p.-dls:.- Inferror /Oohte »Dundry. 
Presented by the Rev. G. F. Whidborne. 
P. subserrata (Miinster), G. F. Whidborne, Q. J. G. 5S. XxXxix 
(1883), pl. xvi, f. 4, 5, p. 515. Inferior Oolite; Bradford 
Abbas. Presented by the Rev. G. F. Whidborne. 
Pseudaxinus securiformis, v. Anodontopsis securiformis. 
Pterineza? asperula, I’. McCoy, A. M. N. H. ser. 2, vir (1851), 
p. 60, and Contrib. Brit. Pal. (1854), p. 195, and Brit. Palieoz, 
Foss. (1852), pl.1 1, 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 dannomensis, J. de C. 
Sowerby, Trans. Geol. Soc. ser. 2, v (1840), pl. lin, f 22. 
Upper Devonian ; Marwood. 
P. demissa (Conrad), F. McCoy, Brit. Palseoz. Foss. (1852), pl. 1 1, 
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, vit (1851), p. 60, and 
Contrib. Brit. Pal. (1854), p. 195, and Brit. Paleoz. Foss. (1852), 
pit, 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, vit (1851), p. 61, and 
Contrib. Brit. Pal. (1854), p. 196, and Brit. Paleeoz. Foss. (1852), 
pl. it, f. 19, 20, p. 261. Upper Ludlow Tilestones; Storm Hill, 
Llandeilo. 
P. pleuroptera (Conrad), F. McCoy, Brit. Paleeoz. Foss, (1852), 
pli £ 12) 2 a,b) p26) Pig 1, Lower Ludlow; Park 
Lane, near Llandeilo. Fig. 2, Bala Beds ; Cyrn-y-Brain. 
P. retroflexa (Wahlenberg) var. naviformis (Conrad), F. McCoy, 
Brite Palscon Hoss. (852), pls av 1,930) pe 2622°) Upper 
Ludlow ; Kirkby Moor, near Kendal. 
