23 



AMPYX, Dalman, 183G. 



Ampj/.T, Dalman, 1836, Palaead. ; Miirch. 1839, Sil. Syst. p. G60; Forbes, 

 1849, Decade ii. Geol. Surv. ; Salter, 1866, Mem. 'Geol. Surv. vol. iii. 

 p. 3-21 ; Hicks, 1875, Quart. Joum. Geol. Soc. vol. xxxi. p. 182. 

 Distribution. Cambrian and Silui'ian. 



Ampyx nudus, iluixhison, sp., 1839. Uaudeilo Flags, near Builtli, 



S. Wales. 

 Trinudeus midus, Murch. 1839, Sil. Syst. p. 660, pi. 23. fig. 5. 

 Ampyx nudus, Forbes, 1849, Decade (jteol. Surv. ii. pi. x. 



Ampyx parvidus, Forbes, 1848. Lower Ludlow Rocks, Yinnal Hill, 



Ludlow. 

 Ampijx parvulus, Forbes, 1848, Mem. Geol. Siu't. vol. ii. pt. 1, pi. x. p. 3o0. 



Ampyx praenuntius, Salter, 1866. Upper Tremadoc, Pen-y-clogwyn, 



Tremadoc. 

 A»ipi/x pvcemintius, Salter, 18G6, Mem. Geol. Surv. vol. iii. p. 321, pi. 8. 

 fig. 5. 



Ampyx Salteri, Hicks, 1875. Middle Arenig, Slate Quarry, 



Whitesand Eay, St. Davids. 

 Ampyx Salteri, Hicks, 1875j Cat. Camb. & Sil. Foss. p. 22 ; 1875, Quart. 

 Journ. Geol. Soc. vol. xxxi. p. 1S2, pi. x. figs. 7, 8. 



Ampyx tumidus, Forbes. Caradoc, Ehiwlas, Bala. 



Ampyx tiimidus, Forbes, Decade ii. Geol. Surv. pi. x. p. 4 ; Salter, 1866, 

 Mem. Geol. Surv. vol. iii. p. 320, pi. 23. fig. 6, woodcut 9. 



ANOPOLENUS, Salter, 1864. 



Anopolenus, Salter, 18fi4, Quart. Joiuii. Geol. Soc. vol. xx. p. 236; Hicks, 

 1872, ib. vol. xxviii. p. 179. 

 Distribution. Cambrian. 



Anopolenus impar, Hicks, 1872. Meuevian Group, St. Davids and 



Maentwrog. 

 Anopolenus impar. Hicks, 1872, Quart. Journ. Geol. Soc. vol. xxviii. p. 179, 

 pi. vii. figs. 1-7. 



Anopolenus Henrici, Salter, 1864. Lingula-FIags. 



Anopolenus Henrici, Salter, Quart. Journ. Geol. Soc. vol. xx. p. 236, pi. xiii. 

 figs. 4, 5 ; ib. vol. xxi. p. 480, woodcuts 2, 3. 



Anopolenus Salteri, Hicks, 1865. Lingula-Flags, St. Davids. 



Anopolenus Salteri, Hicks, 1865, Quart. Journ. Geol. Soc. vol. xxi. p. 478, 

 woodcut 1 ; id. 1872, ib. vol. xxviii. p. 179, pi. vii. figs. 8-11. 



