46 TEILOBITA. 



Ogygia Portlockii, Salter, 1849. Llandeilo Flags, Newtown Head, 



Waterford, and liuilth, Eadnorshire, 

 Asaplms dilatatus, Portlock, 1832, Rep. Geol. Tyrone, &c. pi. xxiv. fig. 2. 

 Ogygia clilatata, Phillips, 1848, Mem. Geol. Surv. vol. ii. pt. 1, p. 239. 

 O. Portlockii, Salter, 1849, Geol. Surv. Decade ii. pi. vii. 



Ogygia scutatrix, Salter, 1859. Lower and Upper Tremadoc Eocks, 



Merionethshire, Portmadoc ; Arenig Group, St. David's. 



Ogygia scutatrix, Salter, 1859, Siluria, 2nd edit. p. 53, woodcut 9. fig. 1 ; id. 



1866, Append. Ramsay Geol. N. Wales, Mem. Geol. Surv. vol. iii. p. 312, 



pi. viii. fig. 8, & pi. ix. fig. 1 ; id. 1866, Mon. Pal. Soc. pt. 3, p. 133, 



pi. xvii. figs. 9-13. 



Ogygia Selwynii, Salter, 18G6. Arenig Group, Hcngwrt Ucharf, 



Dolgelly ; White Grit-Mine, Shelve, Shropshirv'. 

 Asaplms Selwynii, Salter, 1852, Rep. Brit. Assoc, p. 57. 



Oqygia Selwynii, Salter, 1866, Append. Ramsaj' Geol. N. Wales, Mem. Geol. 

 "Surv. vol. iii. p. 313, pi. ix. figs. 2-6, & pi. xi. B. fig. 6 ; id. 1866, Mon. Pal. 

 Soc. pt. 3, p. 136, pi. xvii. figs. 1-7. 



OLENUS, Dalman, 1827. 



Sj>h(i>rop7ithalmus, Angelin, Pal. Suec. ; Belt, 1867, Geol. Mag. vol. v. 



p. 10. 

 Faradoxides, Brong. 1822, Crust. Foss. 

 Entomostracites, Wahl. Nova Act. Soc. Upsal. vol. viii. 

 Peltura, Milne-Edw. 1840, Crust, vol. iii. p. 344 ; Angelin, 1856, Palaont. 



Suecica. 

 Olenns, Dalman, 1827, Palsead. ; Phillips, 1848, Mem. Geol. Surv. vol. ii. 



p. 239 ; Salter, 1849, Decade ii. Geol. Surv. p. 1 ; Belt, 1867, Geol. Mag. 



vol. iv. p. 295. 

 Subgeneric divisions : — 



1. Paraholina, Salter, 1849. 2. Spharopldhalmus, Salter, 1864. 



Distribution. Cambrian. 



Olenus (Sphaerophthalmus) alatus, Boeck. Upper Lingula-Flags, 



Carreg-wen, Borth, Penmorfa church, Tremadoc, Malvern. 



Olenus alatus, Boeck, Gfea Norvegica, p. 143. 



Sphm-ophfhahnvs alatus, Angelin, Pal. Suec. pi. xxvi. fig. 9. 



Olenvs hitiflcatiix, Phill. Mem. Geol. Surv. vol. ii. pt. 1, p. 55, figs. 1, 2. 



O. {SpJicrr.) alatus, Salter, 1865, Decade xi. Geol. Surv. pi. viii. fig. 6; id. 1866, 



Mem. Geol. Surv. vol. iii. p. 302, pi. iv. fig. 3 ; id. 1873, Cat. Camb. & Sil. 



Foss. p. 12. 



Olenus bisuleatus, Phillips, 1848. Black Shale, White-leaved Oak, 



Malvern. 



Olenus hisulcatus, Phillips, 1848, Mem. Geol. Surv. vol. ii. pt. 1, p. 55, 

 fig. 1, and p. 346, Append. ; Salter, 1864, Decade xi. Geol. Surv. pi. viii. 

 fig. 6. 



Spharophthalmus bisuleatus, Belt, 1868, Geol. Mag. vol. v. p. 10. 



Olenus cataractes, Salter, 1866. Lower Lingula-Flags, Macntwrog 



Waterfall, Merionethshire ; Trefiys, near Portmadoc. 



Olerms cataractes, Salter, 1866, Mem. Geol. Surv. vol. iii. p. 300, pi. v. 



fig. 23; id. 1864, Decade xi. Geol. Surv. p. 1, pi. x. fig. 14; id. 1873, Cat. 



Camb. & Sil. Foss. p. 7. 



