TRILOBITA. 149 



Ogygia peltata, J. W. Salter, Mon. Brit. Tril. (1867), pi. xxv*, 

 f. 1, 2, 4, p. 177. Middle Arenig ; Whitesand Bay. 



0. radians, v. Barrandia radians. 



Olenus (Sphaerophthalmus) expansus, Salter, Cat. (1873), p. 12. 

 Upper Lingida Flags ; Moel Gron. 



O. planti, Salter, Cat. (1873), p. 11. Upper Lingula Flags; 

 Moel Gron. Presented by J. Plant, Esq. 



Paradoxides harknessi, H. Hicks, Q. J. G. S. xxvii (1871), 

 pi. XV, f. 9, 10, 11, p. 399. Harlech Beds; St Davids. 

 Presented by Dr H. Hicks. 



P. hicksi, Salter, H. Hicks, Q. J. G. S. xxv (1869), pi. iii, f. 1 b, 

 2, 10 a, p. 55. Menevian Beds; Pen-pleidiau, St Davids. 

 Presented by Dr H. Hicks. 



Phacops (Acaste) alif^ons, J. W. Salter, Appendix to F. McCoy, 

 Brit. Palajoz. Foss. (1855), p. ii. F. McCoy, ibid. (1851), pi. i G, 

 f. 12—14, p. 159. J. W. Salter, Mon. Brit. Tril. (1864), pi. i, 

 f. 31, 32, p. 33. Middle Bala; Gapel Garmon, and Pont-y-Glyn. 



P. (Acaste) apiculatus, J. W. Salter, Appendix to F. McCoy, 

 Brit. Palseoz. Foss. (1855), p. iii. Portlockia? apiculata, F. 

 McCoy, ibid. (1851), pi. i G, f. 17—19, p. 162. Middle Bala; 

 S. W. of Pwllheli, Glyn Geiriog, amd Rhiwargor. 



P. (Chasmops) conophthalmus (Boeck ?), J. W. Salter, Organic 

 Remains, dec. vii, art. 1, (Mem. Geol. Survey, 1853), p. 11, 

 and Mon. Brit. Tril. (1864), pi. iv, f. 25, pi. vi, f. 25, p. 40. 

 Chasmops odini? (Eichwald), F. McCoy, Brit. Palseoz. Foss. 

 (1851), pi. i G, f. 22, 23, p. 164. Middle Bala; Llansantffraid. 



P. (Acaste) downingls (Murchison), J. W. Salter, Organic 

 Remains, dec. vii (Mem. Geol. Survey, 1853), pi. i, f. 2, 3. 

 Wenlock Limestone; Dudley. Fletcher Collection. These 

 specimens cannot be identified. 



P. (Acaste) downingls (Murchison) var. cuneatus, J. W. 



Salter, Mon. Brit. Tril. (1864), p. 28, woodcut 8. Denbigh- 

 shire Grits ; Moel Seisiog, Llanrwst. 



P. elegans (Boeck and Sars), J. E. Man- and H. A. Nicholson, 

 Q. J. G. S. XLiv (1888), pi. xvi, f. 1—3, p. 720. Skelgill Beds; 

 figs. 1, and 3, zone of Phacops globe)', Skelgill: fig. 2, zone 



