BRITISH FOSSILS. 



11 



Other British Species. 



O. micrurus, Salter, Decade II., pi. 10, (section Olenus). 



O. alatus, BsBck, our pi. 8, fig. 15, and Salter in Mem. Geol. Surv., vol. iii. ined,, pi 4, 

 fig. 3 (section Sphcerophthalmus.) 



Explanation of Plate VIII. 



Figs. 1-4. Olenus (Peltura) scarabfEoides^Wahl,? (possibly a new species), var. ohesus, 

 Salter. Fig. 1. Natural size, uncompressed (Mr. Ash's cabinet). Fig. 2 

 compressed (Mus. Pract. Geology.) Fig. 3, slightly enlarged ; specimens 

 are, however, occasionally found nearly of these dimensions. 



Fig. 4. Malvern specimen, the same figured by Phillips in Mem. Geol. Surv., vol. ii., 

 pt. 1, pi. 55. The glabella furrows are far too strongly marked. 



Fig. 4 a. Labrum, from Malvern. Upper Lingula Flag (Black Shales). 



Fig. 5. Olenus (^Paraholina) serratus, n. sp,, Carreg Wen, Portmadoc. 



Fig. 6. Olenus (Sphcerophthalmus) hisulcatus, Phill. His original specimen from 

 Malvern, in Upper Lingula Flag. 



Figs. 7,8. Olenus {Splicer. ) JlagelUfer, Angelin. ? Carreg Wen, Portmadoc, Upper 

 Lingula flag. 



Fig. 9. Olenus (Sphcer,) humilis, Phill., Malvern, Dr. Grindrod's cabinet (magnified). 

 Figs. 10, 11. Heads of the same (the free cheeks lost). Same locality. (Survey 



collection.) Abundant in the Black Shales. 

 Fig. 12. Olenus (Sphcer.) pecten., n. sp. Same locality. (Rev. W. Symonds' cabinet.) 

 Fig. 13. Thorax of do., natural size and magnified. Same locality and cabinet. 

 Fig. 14. Olenus cataractes, n, sp.. Lower Lingula Flags, Treflys, near Criccieth (Mus. 



Pract. Geol.) 14 6. Tail enlarged. 14 a. Pleurae. 

 We have figured three Swedish fossils to illustrate sub-genera imperfectly represented 

 by British specimens. All are from the primordial zone. 

 Fig. 15. O. {Sphcer.) alatus, Bseck, copied from Angelin. 

 Fig. 16. O. (Paraholind) spinulosa, Wahl. do. 



Fig. 17. O. {Leptoplastus) or Sphoerophthalmus raphidophorus, Angelin, copied from 

 his Paleeont. Suecica, pi. xxvi., fig. 2. 



J. W. Salter. 



November 1864. 



