186 



INDEX. 







PAGE 





PAGE 



Remopleurides longicostatus 



39 



Telephus fractus 



44 



ruicroplitlialmus 



. 33 



— wegelini 



44 



nanus 



.33,41 



Teratorhynchus 



35 



obtusus 



. 35 



— bicornis 



33,162 



platyceps 



.35,42 



Thaleops ovatus 



64,73 



portlocki 



33 



Tornquistia nicholsoni 



86, 167 



radians 



.30,33 



Triarthrus 



28 



salteri 



. 40 



— angelini ... 



30 



— var. girvanensis 



. 39 



— becki 



28 



tuberculatus ... 



.35,41 



— jemtlandicus 



30 



sp. ind. 



.31,42 



— pygmaeus ... 



30 



Kobergia raicropbthalmus ... 



.31, 33 



Trilobites elegans 



154 







— elliptif rons 



154 



Salteria 



43 



triradiatus 



86 



— primaeva 



43 



verrucosa ... 



129 



Shumardia 



42 



Trilol >us punctatus ... 



120 



miqueli ... 



43 



— tuberculatus 



134 



salopiensis 



43 



Trinodus agnostif ormis 



3 



scotica 



42 



— tardus 



3 



Sphaerexochus 



. 151 



Trinucleidae ... 



10,160 



— angustifrons... 



. 151 



Trinucleus 



10,160 



calvus 



. 151 



bucklandi 



10 



clavifrons 



. 151 



concentricus 



13,14 



juvenis 



. 141 



favus 



13 



mirus... 



. 151 



lloydi 



13 



SpliEerocoryplie cranium 



. 148 



— macconochiei 



11 



— dentata 



. 148 



ornatus ... 



13 



granulata 



. 148 



radiatus ... 



13 



hubneri 



. 148 



reticulatus 



13 



thomsoni 



. 146 



seticornis 



10 



Staurocephalus 



. 152 



— subradiatus 



12 



globiceps ... ... 1 



50, 152 



— wahlenbergi 



15 



maclareni ... ... 1 



42, 146 



— sp. ind. ... ... b 



b. 15, 16, 17, 160 



unicus ... ... 1 



sp. ind. 



42, 146 

 132 



Vertical Range of Genera . . 



177 



Strati graphical Distribution 



70 



Youngia 



149 



Stygina 



. 50 



trispinosa ... 



148 



Latifrons 



.50, 93 



AA 



— uralica 

 Zethus verrucosus 



149 



124 



Telephus 



