SYSTEMATIC LIST OF LOWER PALAZOZOIC FOSSILS. 535 
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above. 
Genera and Species, with the localities represented by the 
numbers of the preceding List, under each 
Geological Group. 
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46 
48 
49 
‘PTILODIOTYA. 
— acuta (Hall. Sp.) 
| Upper Bala, 153. 
|— — Var. minor. 
Upper Bala, 156. | 
'— costellata (M°Coy). | 
Bala Group, 104. 
Upper Bala, 153—171—182. 
— explanata (M°Coy). 
Upper Bala, 184—106—148—19a— 
54—62—171—205—153. 
— fucoides (M*Coy). 
Upper Bala, 153—103—64. 
— lanceolata (Gold. Sp.) 
Aymestry limestone, 12. 
Wenlock shale, 55. 
Upper Bala, 205. 
RETEPORA. 
—Hisingeri (M°Coy). 
Upper Bala, 43—54—19 a—184—62. 
GLAUCONOME. 
— disticha (Gold.) 
Wenlock limestone, 91. 
Upper Bala, 153—19a—148—184. 
FENESTELLA. 
— WMilleri (Lonsd. Sp.) 
Upper Bala, 19a—153—43. 
— patula (M°Coy). 
Wenlock limestone, 91. 
— rigidula (M°Coy). 
Wenlock limestone, 91. 
— subantiqua (VOrb.) 
Upper Bala, 171—153. 
TAXOCRINUS. 
— Orbignyi (M°Coy). 
Upper Ludlow, 117. | 
— tuberculatus (Mill. Sp.) | 
Wenlock limestone, 91. 
ICHTHYOCRINUS. 
— pyriformis (Phill. Sp.) 
Upper Ludlow, 137. 
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which de- 
scribed 
above. 
Genera and Species, with the localities represented by the 
numbers of the preceding List, under each 
Geological Group. 
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62 
62 
MARSUPIOCRINUS. 
|— celatus (Phill. Sp.) 
Wenlock limestone, 91. 
CROTALOCRINUS. 
— rugosus (Mill. Sp.) 
Wenlock limestone, 91—262. 
| ACTINOCRINUS. 
— pulcher (Salt.) 
Upper Ludlow, 231. 
Wenlock shale, 186. 
PERIECHOCRINUS. 
— moniliferus (Mill. Sp.) 
Wenlock limestone, 91. 
GLYPTOCRINUS. 
— basalis (M°Coy). 
Upper Bala, 7. 
EUCALYPTOCRINUS. 
— decorus (Phill. Sp.) 
Wenlock limestone, 91. 
— polydactylus (M°Coy). 
Wenlock limestone, 91. 
| URASTER. 
— hirudo (Forb.) 
Upper Ludlow, 214. 
— futhveni (Forb.) 
Upper Ludlow, 117—18. 
'— primevus (Forb.) 
Upper Ludlow, 117. 
PROTASTER. 
— Sedqwickii (Forb.) 
Upper Ludlow, 86—18. 
| CARYOCYSTITES. 
| — Davisii (M°Coy). 
Upper Bala, 62—270. 
— granatum (Wahl.) 
Upper Bala, 220. 
TETRAGONIS. 
— Danbyi (M°Coy). 
Upper Ludlow, 23. 
