LAMELLIBRANCHIATA. 69 



Anodontopsis quadrata, F. McCoy, A. M. N. H. ser. 2, vn 



(1851), p. 55, and Contrib. Brit. Pal. (1854), p. 190, and Brit. 



Palaeoz. Foss. (1852), pi. i K, f. 10, p. 272. Palcearca diagona, 



Salter, Cat. (1873), p. 190. Upper Ludlow Tilestones ; Storm 



Hill, Llandeilo. 

 A. securiformis, F. McCoy, A. M. N. H. ser. 2, vn (1851), p. 55, 



and Contrib. Brit. Pal. (1854), p. 190, and Brit. Palseoz. Foss. 



(1852), pi. i L, f. 9, 9 a, p. 272. Pseudaxinus securiformis, 



Salter, Cat. (1873), p. 183. Upper Ludlow; Benson Knot, 



Kendal. 



Anomia papyracea, d'Orbigny, var. burwellensis, R. Ethe- 



ridge, Appendix to W. H. Penning and A. J. Jukes-Browne, 



Geol. Cambridge (1881), pi. iii. f. 3, 4, p. 145. Lower Chalk 



(Totternhoe Stone); Burwell. 

 Area carteroni, d'Orbigny, W. Keeping, Foss. Upware and 



Brickhill (1883), pi. v, f. 7 a, b, p. 114. Lower Greensand; 



Upware. 

 A. edmondiiformis, F. McCoy, A. M. N. H. ser. 2, vn (1851), 



p. 52, and Contrib. Brit. Pal. (1854), p. 187, and Brit. Palseoz. 



Foss. (1852), pi. i K, f. 2, 3, p. 283. Fig. ^ from Denbigh Flags, 



near Llangynyw ; fig. 3 from the Middle Bala, Allt-yr-Gader. 

 A. laekeniana, Le Hon, var. cylindrica, S. V. Wood, Eoc. 



Bivalves i (1864), pi. xv, f. 7 c, p. 80. Bracklesham Beds; 



Huntingbridge. Fisher Collection. This specimen is missing. 

 A. (Byssoarca) subaequalis, F. McCoy, A. M. N. H. ser. 2, vn 



(1851), p. 51, and Contrib. Brit. Pal. (1854), p. 186, and Brit. 



Palseoz. Foss. (1852), pi. i K, f. 1, 1 a, p. 283. Ctenodonta 



sitbcequalis, Salter, Cat. (1873), p. 190. Upper Ludlow; Llech- 



clawdd, Myddfai, near Llandovery. 

 A. ? sulcata v. Inoceramus sulcatus. 

 Astarte aytonensis [Bean MS.], J. Lycett, Supp. Mon. Moll. 



Great Ool. etc. (1863), pi. xl, f. 13, p. 78. Great Oolite; Combe 



Down, near Bath. Walton Collection. 



Another specimen, J. F. Blake and W. H. Hudleston, Q. J. 



G. S. xxxin (1877), pi. xiv, f. 11, p. 397. Coralline Oolite; 



Ayton, near Scarborough. Leckenby Collection. 

 A. bathonica J. Lycett, Supp. Mon. Moll. Gt. Ool. etc. (1863), 



