EXPLANATION OF THE PLATES. 4] 
Dec. 7, p. 4. Wenlock strata, Dudley Castle Hill; (entire)—Trindle, near 
Dudley ; Walsall, Dec. 7, p. 4, and Wenlock shale (entire). Malvern, pres. 
by S. Allport, Esq. Mus, G. S. I. 
Fic. 11.—a, b, c. PHACoPS BRONGNIARTII, Portlock. 
Geological Report, p. 282, pl. ii., figs. 8, 9,10. G.S., Dec. 7, p. 10. 
a. Original. Entire animal; from Desertcreat, Tyrone. Portlock collection, 
Mus. G. S. I. 
b. Original. Coiled specimen ; from Tramore Bay. Mus. G. S. I. 
c. Original. Eye enlarged, showing lenses; from 11 a. 
Caradoc. Sil., fourth edition, p. 519. Localities—near Bala ; Llanwddyn ; 
Llanfyllin, Montgomeryshire. M. G.S., vol. ili., p. 264. Grangegeeth, 
Co. Meath; Rathdrum, Wicklow; Carrickadaggan, Wexford. Abundant 
at Quillia and Pickardstown, Co. Waterford; as well as at localities in 
Tramore Bay. Mus, G.S. I. 
