TRILOBITA. 151 
Phillipsia gemmulifera (Phillips), H. Woodward, Brit. Carb. 
Tril. (1883), pl. iti, f. 4, p. 17. Carboniferous Limestone ; 
Derbyshire. 
P. truncatula (Phillips), H. Woodward, Brit. Carb. Tril. (1883), 
pl. iii, f. LO—12, p. 21. Carboniferous Limestone; Hook Head, 
co. Wexford. 
Placoparia cambrensis, H. Hicks, Q. J. G.S. Xxx (1875), pl. ix, 
f.1, p.186. Llanvirn Beds; Llanvirn Quarry. Presented by 
Dr H. Hicks. 
Plutonia sedgwicki, H. Hicks, Q. J. G.S. xxvu (1871), pl. xv, 
f.1, 3, 4,5, 7, p. 399. Harlech Beds ; Headland, near Nuns 
Well, St Davids. Presented by Dr H. Hicks. 
Portlockia? apiculata, v. Phacops apiculatus. 
P. granulata, v. Phacops granulatus. 
Proétus brachypygus, J. E. Marr, and H. A. Nicholson, Q. J. 
G. S. xntv (1888), pl. xvi, f. 18, 19, p. 725. Skelgill Beds (zone 
of Ampyzx aloniensis); f. 18 from Skelgill, f. 19 from Pull 
Beck. Presented by J. E. Marr, Esq., F.R.S. 
P. champernowni, G. F. Whidborne, Devonian Fauna 8. Eng. 
(1889), pl. ii, f. 13, p. 23. Middle Devonian ; Lummaton, 
near Torquay. 
P. fletcheri, Salter, Cat. (1873), p. 134. Wenlock Limestone ; 
Dudley. Fletcher Collection. 
Psilocephalus inflatus, J. W. Salter, Appendix to A. C. Ramsay 
Geol. North Wales (1866), p. 316, woodcut 8 a, and zbid. second 
edition (1881), p. 512, and Mon. Brit. Tril. (1866), p. 176, 
woodcut 41 a. Lower Tremadoc ; Penmorfa Road. Presented 
by D. Homfray, Esq. 
P. innotatus, J. W. Salter, Appendix to A. C. Ramsay, Geol. 
North Wales (1866), pl. vi, f. 9, 9 a, 10, 12, p. 315, and cbid. 
second edition (1881), p. 511, and Mon. Brit. Tril. (1866), 
pl. xx, f. 14, 17, 19, p. 175. Lower Tremadoc; near Borth, 
Portmadoc. Presented by D. Homfray, Esq. 
Spherexochus boops, J. W. Salter, Mon. Brit. Tril. (1864), pl. vi, 
f. 28, p. 79. Ceraurus clavifrons (Dalman), F. McCoy, Brit. 
