152 TRILOBITA. 
Palzeoz. Foss. (1851), pl. iF, f 12, p. 154. Coniston Limestone ; 
Applethwaite Common. 
Spherexochus mirus, Beyrich, J. W. Salter, Mon. Brit. Tril. 
(1864), pl. vi, f. 6 g, p. 76. Wenlock Limestone; Malvern. 
Fletcher Collection. 
Staurocephalus murchisoni, Barrande, F. McCoy, Brit. Palzeoz. 
Foss. (1851), pl. i F, f. 15, 15 a, p. 153. J. W. Salter, Mon. 
Brit. Tril. (1865), pl. vu, f. 19, p. 84. Middle Bala ; Rhiwlas. 
Tretaspis fimbriatus, v. Trinucleus fimbriatus. 
Trinodus agnostiformis, v. Agnostus agnostiformis. 
T. tardus, v. Agnostus agnostiformis. 
Trinucleus concentricus (Eaton). 7. gibbifrons, F. McCoy, A. 
M. N. H. ser. 2, tv (1849), p. 411, and Contrib. Brit. Pal. 
(1854), p. 149, and Brit. Paleeoz. Foss. (1851), pl. 1 5, f 14, 
14a, p. 145. Llandeilo Beds ; Golden Grove, Llandeilo. This 
specimen cannot be found. 
T. etheridgei, H. Hicks, Q. J. G. 8S. xxx1 (1875), pl. ix, f. 6, 
p. 182. Llanvirn Beds; Llanvirn Quarry. Presented by Dr 
H. Hicks. 
T. fimbriatus, Murchison. Tvretaspis fimbriatus, F. McCoy, 
Brit. Paleeoz. Foss, (1851), pl. i £, f. 16, 16 a, p. 146. Llandeilo 
Beds; Pencerrig, near Builth. 
T. gibbifrons, v. Trinucleus concentricus. 
T. ramsayi, H. Hicks, Q. J. G. 8S. xxx1 (1875), pl. x, f. 2, p. 183. 
Upper Arenig ; Porth-hayog. Presented by Dr H. Hicks. 
Trochurus nodulosus, v. Lichas nodulosus. 
Zethus atractopyge, v. Cybele verrucosa. 
Z. rugosus, v. Cybele rugosa. 
Z. sexcostatus, v.. Encrinurus sexcostatus. 
