130 CEPHALOPODA. 



Orthoceras sericeum, J. W. Salter, Appendix to A. C. Ramsay, 

 Geol. North Wales (1866), pi. x, f. 4, 5, p. 356, and ibid, second 

 edition (1881), p. 564. J. F. Blake, Brit. Foss. Ceph. part i 

 (1882), pi. xiii, f. 2, p. 138. Upper Tremadoc ; Garth, Port- 

 madoc. Presented by D. Homfray, Esq. 



Orthoceras sp., H. Hicks, Q. J. G. S. xxix (1873), pi. iii, f. 27, 

 p. 51. Tremadoc Rocks; Tremaenhir, near Solva. Presented 

 by Dr H. Hicks. 



O. striato-punctatum, Miinster, var. originate, Barrande. 0. 

 originate, J. F. Blake, Brit. Foss. Ceph. part i (1882), pi. vii, 

 f. 10, p. 110. Wenlock Shale; Builth Bridge. 



O. striatulum, J. de C. Sowerby, Trans. Geol. Soc. ser. 2, v (1840), 

 pi. liv, f. 20. Upper Devonian ; South Petherwin. 



O. subundulatum, Portlock. Creseis sedgwicki, E. Forbes, Q. J. 

 G. S. I (1845), p. 146, woodcut 2. Denbighshire Flags; Cefn- 

 ddu, Denbighshire. 



O. tenuiannulatum (McCoy), J. F. Blake, Brit. Foss. Ceph. 



part i (1882), pi. v, f. 9, 9 a, p. 98. Lower Ludlow ; near 



Aymestry. 



Gycloceras tenuiannulatum, F. McCoy, A. M. N. H. ser. 2, 



vii (1851), p. 46, and Contrib. Brit. Pal. (1854), p. 181, and 



Brit. Paheoz. Foss. (1852), pi. i L, f. 31, 31 a, p. 320. Lower 



Ludlow ; Green Quarry, Leintwardine. 

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



Foss. (1855), p. vi. F. McCoy, ibid. (1852), pi. i L, f. 28, 29, 



29 a, p. 318. Coniston Limestone ; Coniston. 

 O. sp., J. de C. Sowerby, Trans. Geol. Soc. ser. 2, v (1840), pi. liv, 



f. 21. Upper Devonian; South Petherwin. 



O. sp., J. de C. Sowerby, Trans. Geol. Soc. ser. 2, v (1840), pi. liv, 

 f. 22. Upper Devonian ; Beacon Cove, Mawgan. 



O. sp., Salter, Cat. (1873), p. 159. Wenlock Limestone; Dudley. 

 Fletcher Collection. 



O. sp., Salter, Cat. (1873), p. 187. Upper Ludlow ; High Thorns, 

 Underbarrow. 



Phragmoceras intermedium, v. Cyrtoceras (Meloceras) m'coyi. 



P. (Gomphoceras) liratum, v. Orthoceras barrandei. 



