THE FOSSIL THYLLOPODA OF THE PALAEOZOIC ROCKS. 



425 



Table IV. — Geological Order of Species — continued. 



Local Formation 



Specie \ 



Second Fauna (' Ordovician ' of Lajjworth, cfc). 



(B^) Bala or Caradoc 



(B-) Llandeilo 



(B') Arenig 



Bala Beds of Corwen 



Balclatchie Beds, Girvan 

 Probably highest Llan- 1 



deilo Beds J 



Upper Llandeilo Beds "[ 



(near Builth) J 



Llandeilo (?) Beds of Aus 



tralia 



Upper Arenig Beds of Caer- 

 narvonshire (Pont Seiont) 



Skiddaw Slates (mainly 



Arenig) 

 Bennane Head Shales of 



South Scotland 

 Arenig 



First Fauna (' Cambrian ' of LyclV). 



Lingulocaris siliquifor- 

 mis. 



Pinnocaris Lapworthi. 



Lingulocaris lingulseco- 

 mes 



Caryocaris Salteri. 



Hymenocarisvermicauda. 

 Saccocaris minor. 

 Caryocaris Wrightii. 

 Marrii. 



Caryocaris Wrightii 



Marrii. 



(A') Olenidian, or Upper 

 Cambrian. 



Upper Tremadoc Slates 



Lower Tremadoc Slates 

 Upper Lingula Flags 

 Middle Lingula Flags 

 Lower Lingula Flags 



Hymenocaris vermicauda. 



„ lata. 



Lingulocaris lingulseco- 



mes. 

 Lingulocaris siliquifor- 



mis. 

 Saccocaris major. 



Lingulocaris Salteriana. 

 Hymenocaris vermicauda. 

 Hymenocaris vermicauda. 

 Hymenocaris vermicauda. 

 Lingulocaris Salteriana. 

 Saccocaris major. 

 1 Saccocaris minor. 



2§. Latest Additions to our Knowledge of the Lower Palceozoic Phyllopoda 



(Phyllocarida). 



There has not been much to notice additional in the study of 

 Palseozoic Phyllopoda since the last (Eleventh) Report in 1894. 



1. Professor Dr. Gustav Lindstrom, palaeontologist in the State 

 Museum of Sweden, has discovered and courteously sent to us specimens 

 of a new Emmelozoe, not far removed in shape and features from 

 E. elliptica (M'Coy). Several very definite individuals, with delicate, 

 thin, shining carapace- valves, light brown, and somewhat iridescent, occur 



