TRILOBITA. 139 



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

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

 Davids. 



A. scutaUs, Salter, H. Hicks, Q. J. G. S. xxviii (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 (Mnrchison). 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 v, 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, Maentwrog, presented by D. Homfray, Esq. 



A. impar, H. Hicks, Q. J. G. S. xxviii (1872), pi. vii, f. 1—7, 

 p. 179. Menevian Beds; PoHh-y-rhavo, St Davids, presented 

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

 Homfray, Esq. 



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

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



Arionellus longicephalus, H. Hicks, Q. J. G. S. xxviii (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. Pala30z. Foss. (1851), 

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

 Tremadoc. 



A. (Isotelus) homft-ayi, 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), 



