TEILOBITA. 25 



Asaphus (Isotelus) gigas, De Kay, 1824. Caradoc Rocks, Desertcreat. 



Isotelus gigas et I. planus, De Kay, 1824, Annals of Lyceum New York, 



vol. i. p. 170, pis. xii. & .\iii. fig. 1 ; Portlock, 1843, Geol. Report, p. 295, 



pi. vii. figs. 2, 3, pi. viii. fig. 7. 

 I. gigas, Milne-Edw. 1840, Crust. toI. iii. p. 298. 

 Asaphus (Isotelus) gigas, Salter, 18t)4, Mem. Geol. Surv. Decade xi. sec. 3, 



p. 1, pi. iii. ; id. 1866, Mon. Pal. See. pt. 3, pi. xxiv. figs. 1-5, pi. xxv. 



tisr. 1. 



Asaphus (Isotelus) Homfrayi, Salter, 1866. Upper Tremadoc Slate, 



Garth, Tremadoe, aud Tw-hwnt-yr-bwlch, near Portmadoc. 



Asaphus Homfrayi, Salter, 1800, App. Ramsay Geol. N. Wales, Mem. Geol. 



Sm-v. vol. iii. p. 311, pi. viii. tigs. 11-14; 1866, Mon. Pal. Soc. pt. 3, 



pi. xxiv. tigs. 6-12 J 1873, Cat. Camb. & Sil. Foss. p. 17. 



Asaphus? (Basilicus) hybridus, Salter, ]866. Llandeilo Flags, 



Henllan, Amgoed, Carmarthenshire. 

 Asaphus? (Basilicus) hybridm, Salter, 1806, Mon. Pal. Soc. pt. 3, pi. xxiii. 

 figs. 8, 9. 



Asaphus (Basilicus) laticostatus, Salter, 1866. Llandeilo Flags, 



Maen Goran, Builth, Radnorshire. 

 Isotelus (Basilicus) laticostatus, M'Coy, 1851, Pal. Foss. Woodw. Mus. pi. i. E. 



fig. ]8«. 

 Asaphus (Basilicus) laticostatus, Salter, 1866, Mon. Pal. Soc. pt. 3, pi. xriii. 

 fig-. 6. 



Asaphus (Basilicus) Marstoni, Salter, 1866. Caradoc Shale, 



Horderly, Shropshire. 

 [ Asaphus (Basilicus) Marstoni, Salter, 1866, Mon. Pal. Soc. pt. 3, pi. xxiii. 

 tig. 1. 



Asaphus Menapiae, Hicks, 1873. Upper Arenig Rocks, ^Tiitesand Bay ; 



Base of the group, Ramsey I., St. Davids. 

 Asaphus Menapice, Hicks, 1873, Cat. Camb. & Sil. Foss. p. 23. 



Asaphus (Basilicus) peltastes, Salter, 1866. Llandeilo Flags, 



Llandeilo, S. Wales ; Volcanic Grit, Builth, Radnorshire, and 

 Abereiddy Bay, Pembrokeshire. 

 Asaphus (Basilicus) iwltastes, Salter, 1866, Mon. Pal. Soc. pt. 3, pi. xxii. 



tigs. 1-4. 

 A. peltastes, Salter, 1873, Cat. Camb. & Sil. Foss. p. 34. 



Asaphus (Basilicus) Powisii, Murch. 18.37. Llandeilo Flags, Anglesea ; 



Caradoc or Bala Rocks, N. "Wales ; and Caradoc, Shropshire. 



Asaphus Powisii, Murch. 18.'37, Sil. Syst. t. xxiii. fig. 9 ; Salter, 1849, Mem. 



Geol. Surv. Decade ii. pi. iii. p. 6; 1«.59, Siluria, 2nd edit. t. ii. fig. 2; 



1866, App. Ramsay, Geol. N. Wales, Mem. Geol. Surv. vol. iii. p. 312, 



pi. XV. ; 1866, Mon' Pal. Soc. pt. 3, pi. xxiii. figs. 1-7. 



Isotelus Powisii, M'Coy, 1851, Pal. Foss. Woodw. Mus. p. 170. 



