TRILOBITA. 139 



Agnostus scarabaeoides Salter, H. Hicks, Q. J. G. S. xxvin 



(1872), pi. v, f. 8, p. 175. Menevian Beds; Porth-y-rhaw, St 



Davids. 

 A. scutalis, Salter, H. Hicks, Q. J. G. S. xxvin (1872), pi. v, 



f. 9, 10, 12, p. 175. Menevian Beds; Porth-y-rhaw, St Davids. 

 Ampyx (Rhaphiophorus) aloniensis, J. E. Marr and H. A. 



Nicholson, Q. J. G. S. XLVI (1888), pi. xvi, f. 17, p. 724. 



Skelgill Beds (zone of Ampyx aloniensis}; Skelgill. Presented 



by J. E. Marr, Esq., F.R.S. 



A. latus, v. Ampyx nudus. 



A. nudus (Murchison). A. latus, F. McCoy, A. M. N. H. ser. 



2, iv (1849), p. 410, and Contrib. Brit. Pal. (1854), p. 148, 



and Brit. Palseoz. Foss. (1851), pi. i F, f. 13, 13 a, p. 147. 

 Llandeilo Beds ; three miles N. of Builth. 



A. salteri, H. Hicks, in Salter, Cat. (1873), p. 22, and Q. J. G. S. 

 xxxi (1875), pi. x, f. 7, p. 182. Middle Arenig ; slate quarry 

 at Whitesand Bay. Presented by Dr H. Hicks. 



Anopolenus henrici, J. W. Salter, Q. J. G. S. xx (1864), pi. xiii, 

 f. 4 a, b, p. 236, and ibid, xxi (1865), pp. 478, 481, woodcut 3. 

 Menevian Beds. Figs. 4 a, b, St Davids. Woodcut 3, Tafarn- 

 helig, Maentwroy, presented by D. Homfray, Esq. 



A. impar, H. Hicks, Q. J. G. S. xxvm (1872), pi. vii, f. 17, 

 p. 179. Menevian Beds; Porth-y-rhaw, St Davids, presented 

 by Dr H. Hicks. Fig. 2 from Maentwrog ? presented by D. 

 Homfray, Esq. 



A. salteri, H. Hicks, Q. J. G. S. xxvm (1872), pi. vii, f. 8, 9, 11, 

 p. 179. Menevian Beds; Porth-y-rhaw, St Davids. 



Arionellus longicephalus, H. Hicks, Q. J. G. S. xxvm (1872), 



pi. v, f. 20, 22, p. 176. Menevian Beds; Porth-y-rhaw, St 



Davids. Presented by Dr H. Hicks. 

 Asaphus (Isotelus) affinis, F. McCoy, Brit. Palaeoz. Foss. (1851), 



pi. i F, f. 3, p. 169. Upper Tremadoc; over Iron-works, 



Tremadoc. 

 A. (Isotelus) homfrayi, J. W. Salter, Appendix to A. C. Ramsay, 



Geol. North Wales (1866), pi. viii, f. 11, p. 311, and ibid. 



second edition (1881), p. 506, and Mon. Brit. Tril. (1866), 



