TRILOBITA. 151 



Phillipsia gemmulifera (Phillips), H. Woodward, Brit. Garb. 

 Tril. (1883), pi. iii, f. 4, p. 17. Carboniferous Limestone; 

 Derbyshire. 



P. truncatula (Phillips), H. Woodward, Brit. Garb. Tril. (1883), 

 pi. iii, f. 10 12, p. 21. Carboniferous Limestone; Hook Head, 

 co. Wexford. 



Placoparia cambrensis, H. Hicks, Q. J. G. S. xxxi (1875), pi. ix, 

 f. 1, p. 186. Llanmrn Beds; Llanvirn Quarry. Presented by 

 Dr H. Hicks. 



Plutonia sedgwicki, H. Hicks, Q. J. G. S. xxvn (1871), pi. xv, 

 f. 1, 3, 4, 5, 7, p. 399. Harlech Beds ; Headland, near Nan's 

 Well, St Davids. Presented by Dr H. Hicks. 



Portlockia ? apiculata, v. Phacops apiculatus. 

 P. granidata, v. Phacops granulatus. 



Proetus brachypygus, J. E. Man 1 , and H. A. Nicholson, Q. J. 

 G. S. XLIV (1888), pi. xvi, f. 18, 19, p. 725. Skelgill Beds (zone 

 of Ampyx 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 S. Eng. 

 (1889), pi. 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 ibid, 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), pi. vi, f. 9, 9 a, 10, 12, p. 315, and ibid. 

 second edition (1881), p. 511, and Mon. Brit. Tril. (1866), 

 pi. xx, f. 14, 17, 19, p. 175. Lower Tremadoc; near Borth, 

 Portmadoc. Presented by D. Homfray, Esq. 



Sphaerexochus boops, J. W. Salter, Mon. Brit. Tril. (1864), pi. vi, 

 f. 28, p. 79. Ceraiirus davifrons (Dalman), F. McCoy, Brit. 



