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 Lingula Flags ; Mod Or on. 



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. xxvn (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) alifrons, J. W. Salter, Appendix to F. McCoy, 



Biit. Palseoz. Foss. (1855), p. ii. F. McCoy, ibid. (1851), pi. i G, 



f. 1214, p. 159. J. W. Salter, Mon. Brit. Tril. (1864), pi. i, 



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

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



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



McCoy, ibid. (1851), pi. i G, f. 1719, p. 162. Middle Bala; 



S. W. of Pwllheli, Glyn Ceiriog, and Rhiwargor. 

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



Remains, dec. vn, 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; Llansant/raid. 

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



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



Wenlock Limestone; Dudley. Fletcher Collection. These 



specimens cannot be identified. 



P. (Acaste) downingiae (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. Marr 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 glaber, Skelgill: fig. 2, zone 



