40 EXPLANATION OF THE PLATES. 
where.” Upper Llandovery, Shropshire ; very rare, but certainly present ; 
ibid., p. 320. Lower Llandovery, Corston Farm, Hopesay, Mus. G, S. I. 
In Ireland it abounds in Caradoc rocks at several places in the counties of 
Wicklow, Wexford, and Waterford; also at Desertcreat, Tyrone. 
Fic. 7.—a, 6. Licnas raxatus, M‘ Coy. 
Silurian Fossils, Ireland, pl. iv., fig. 9; also Z. pumila, ibid., fig. 8, and 
Calymene? forcipata, ibid., fig. 14. Mem. Geol. Surv., vol. ii., part i., 
p- 340, pl. viil., figs. 4, 5, 6. 
a. Head; from M. G. §., vol. ii., parti., pl. vui., fig. 4. Sholes Hook, Ha- 
verfordwest. 
b. Original. Tail; in limestone, Chair of Kildare. Mus. G. 8. I. 
Carapoc and Luanpovery.—Sil., fourth edition, p. 519. ‘‘ Very common 
in N. and 8S. Wales, M. G. S., vol. iii., p. 324. Localities—in Ireland, © 
near Duleek, and Grangegeeth, near Navan, Co. Meath; Portraine, Co. 
Dublin; Kildare ; Rathdrum, Wicklow ; Carrickadaggan, Frankfort, and 
Moyne, Wexford; Newtown Head, Pickardstown, and Tramore Bay, 
Waterford. Mus. G.S. I. 
Fig. 8.—a, 6. CALYMENE BREVICAPITATA, Portlock. 
Geological Report, p. 286. Mem. Geol. Surv., vol. i., part i, p. 341; 
vol. iii., p. 326. 
a. From Brit. Trilob. Pal. Soc., pl. ix., fig. 3. (C. Blumenbachii var. Carac- 
tact.) Entire animal ; Acton Scott, Shropshire. 
b. Original. From Desertcreat, Tyrone; Portlock collection. Mus. G. 
He 
Carapoc and LuaAnpovery.—Sil., fourth edition, p. 516. Caradoe rocks 
of Shropshire, of Bala, and North Wales. M. G. S%., vol. ii., p. 326. 
Rathdrum, Wicklow; Carrickadaggan, Wexford; Newtown Head and 
Tramore Bay, Waterford; Desertcreat, Tyrone. Mus. G. S. I. 
Fig. 9.—a, 6. HOMALONOTUS BISULCATUS, Salter. 
British Paleontological Fossils, Appendix, pl. 1 G, figs. 24-31. 
a. Head; from Brit. Trilob., pl. x., fig. 9. Onny River, Shropshire. 
6. Body and tail of young specimen; zded., fig. 5. Acton Scott. 
Carapoc and Lianpovery. — Shropshire and Wales. ‘‘ Everywhere in 
Caradoc rocks, but found rarely in Llandeilo, and even in Lower Llandovery 
beds.”” Mem. Geol. Surv., vol. iii., p. 327. Various localities in N. Wales, 
p- 264, Shropshire and Westmoreland Cat. Brit. Foss., second edition, p. 
109. Near Rathdrum, Wicklow; Mus. G. S. I. 
Fic. 10.—a, 6. SPHHREXOCHUS MIRUS, Beyrich. 
Geological Survey, Decade 7, pl. iii. S. calvus, M‘Coy, Sil. Foss., Irel., 
p. 44, pl. iv., fig. 10. 
a. Original. Head ; in limestone, Chair of Kildare. Mus. G. S. I. 
6. Original. ‘Tail; in limestone, Chair of Kildare. Mus. G. S. I. 
Carapoc? LuaAnpdovery, WentockK. Sil., fourth edition, p.521. Caradoc, 
Chair of Kildare abundant; Mus. G. S. I. Carrickadaggan, Wexford, 
