84 
LIST OF TYPES AND FIGT7KED 
Orthoceras annulatum^ J. Sowerby : J. Phillips, Geol. Yorks, pt. ii, 
1836, p. 239, pi. xxi, f. 10 (named 0. annulare in explanation of 
plate). Carboniferous Limestone : Loc. (?). [C. 206.] 
Orthoceras arcticum, A. H. Foord, v. Cyrtoceras sp., R. 
Etheridge. 
Orthoceras barrandei, J. W. Salter, Quart. Journ. Geol. Soc. vol. vii, 
1851, p. 177, pi. ix, f. 19. Silurian (May HRl Sandstone) : MuUoch, 
Ayrshire. [C. 4062.] 
Orthoceras barrandei, J. W. Salter : J. F. Blake, Brit. Foss. Ceph. 
pt. i, 1882, p. 79, pi. xviii, f. 1. Lower Ludlow : Mocktree Hill, 
Herefordshire. [C. 4063.] 
Orthoceras chinense, A. H. Foord, v. Orthoceras sp., S. P. 
Woodward. 
Orthoceras cinctum, J. de C. Sowerby : J. Phillips, Geol. Yorks, 
pt. ii, 1836, p. 237, pi. xxi, f. 1. Carboniferous Limestone : BoUand, 
Yorkshire. [C. 184.] 
Orthoceras darwini, E. Billings : A. H. Foord, Cat. Foss. Ceph., 
British Museum, pt. i, 1888, p. 77, f. 8. Silurian : Offley Island, 
Kennedy Channel, Arctic America. [C. 2143 a.] 
Orthoceras docens, J. Barrande, BuU. Soc. geol. France, [2], vol. xii, 
1855, p. 455, pi. xii, f. 3 (reversed). Silurian (Etage E) : Dworetz, 
Bohemia. [C. 2955.] 
Orthoceras duponti, J. Barrande : J. F. Blake, Brit. Foss. Ceph. 
pt. i, 1882, p. 92, pi. V, ff. 2, 2 a, W^enlock Limestone : Dudley, 
Worcestershire. [83607.] ' 
Orthoceras elegans, A. v. Klipstein : A. Hyatt, ‘ Science,’ voL hi, 
1884, p. 126, ff. 3 & 7. Id. : A. Hyatt, ‘ Genesis of the Arietidae ’ 
(Smithsonian Contributions to Knowledge), 1889, p. 10, ff. 4 & 5. 
Trias : St. Cassian. [36036 a.] 
Orthoceras elegans^ A. v. Klipstein : A. Hyatt, ‘ Science,’ vol. hi, 
1884, p. 126, ff. 4, 5, & 6. Id. : A. Hyatt, ‘ Genesis of the Arie- 
tidae ’ (Smithsonian Contributions to Knowledge), 1889, p. 10, ff. 1, 
2, & 3. Id . : J. Barrande, Syst. Sil. de la Boheme, vol. h, texte v, 
1887, p. 1324 ; vol. ii, Suppl. 1877, pi. 488, case ix, ff. 1, 2, & 3. 
Trias : St. Cassian. [36036 6.] 
