128 CEPHALOPODA. 



Nautilus tuberosus, F. McCoy, A. M. N. H. ser. 2, xn (1853), 

 p. 195, and Contrib. Brit. Pal. (1854), p. 263, and Brit. Palseoz. 

 Foss. (1855), pi. iii H, f. 15, 15 a, b, p. 562. Carboniferous 

 Limestone; Derbyshire. Presented by W. Hopkins, Esq. 



Onychoteuthis sagittata, v. Plesioteuthis sagittata. 



Orthoceras cf. acuminatum, Eichwald, G. F. Whidborne, De- 

 vonian Fauna S. Eng. (1890), pi. xii, f. 7, p. 152. Middle 

 Devonian; Lummaton. 



O. angulatum, Wahlenberg. 0. bacchus, Barrande, J. F. Blake, 

 Brit. Foss. Ceph. part i (1882), pi. ix, f. 7, p. 111. Lower 

 Ludlow ; Dudley. Fletcher Collection. 



0. angulatum, v. Orthoceras canaliculatum. 



O. annulatum, Sowerby, var. crassum, Foord. 0. annulatum, 

 J. F. Blake, Brit. Foss. Ceph. part i (1882), pi. iv, f. 1, 5, p. 89. 

 Wenlock Limestone ; Dudley. Fletcher Collection. 



O. araneosum ?, Barrande, J. F. Blake, Brit. Foss. Ceph. part i 

 (1882), p. 125. Endoceras proteiforme, Hall, H. A. Nicholson, 

 G. M. ix (1872), p. 103, woodcut. Skelgill Beds; Skelgill. 

 Presented by Prof. H. A. Nicholson. 



O. arcuoliratum ?, Hall, F. McCoy, Brit. Palseoz. Foss. (1852), 

 p. 319. J. F. Blake, Brit. Foss. Ceph. part i (1882), pi. iii, 

 f. 14, p. 84. Middle Bala ; Wrae Quarry, near Broughton. 



O. avelinei, Salter. 0. caereesiense, H. Hicks, Q. J. G. S. xxxi 



(1875), pi. xi, f. 8, 9, p. 189. Llanvirn Beds; Llanvirn Quarry. 

 Presented by Dr H. Hicks. 



0. bacchus, v. Orthoceras angulatum. 



O. baculiforme, J. W. Salter, Appendix to F. McCoy, Brit. Palseoz. 

 Foss. (1855), p. vi. F. McCoy, ibid. (1852), pi. i L, f. 27, 27 a, 

 p. 313. Salter, Cat. (1873), p. 187. J. F. Blake, Brit. Foss. 

 Ceph. part i (1882), pi. xv, f. 3, 3 a, p. 160. Upper Ludlow; 

 Brigsteer, Westmoreland. 



O. barrandei, Salter, J. F. Blake, Brit. Foss. Ceph. part i (1882), 

 pi. xviii, f. 10, p. 79. Phragmoceras (Gomphoceras) liratum, 

 Salter, Cat. (1873), p. 174. Lower Ludlow; Garden Quarry, 

 Aymestry. 



