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SYSTEMATIC INDEX. 



Azygograptus 



— Groups of 



— Lapworthi 



— Hicksii ... 



— suecicus ... 



— coelebs 



— Table of Species of 

 Pbyllograptus 



— typus 



— angustifolius 

 — ■ anna 



— ilicifolius var. grandis 

 Family Leptograptidse 

 Leptograptus ... 



— fiaccidus ... 



— — var. spiuifer . . . 



— — var. macilentus 

 var. macer . . . 



— — var. arcuatus 



— capillaris .. 



— validus ... 



— — ■ var. incisus ... 



— grandis ... 



— latus 



— ascendens 



— Table of Species of 

 Pleurograptus 



— linearis ... 



— - var. simplex... 

 Amphigraptus 



— divergens 

 var. radiatus 



— distans ... 

 Nemagraptus ... 



— Groups of 



— gracilis ... 

 var. surcularis 



— — var. remotus 



— — var. nitidulus 



— explanatus 



— — var. pertenuis 



— Table of Species of 

 Family Dicranograptidse 

 Dicellograptus 



— Groups of 



— complanatus 



— — var. ornatus . . . 



— anceps 



PAGE 





92 



Dicellograptus divaricatus . 



93 



— — var. rigidus ... 



93 



— — var. salopiensis 



94 



— in tort us ... 



95 



— patulosus 



97 



— pumilus ... 



98 



— angulatus 



98 



— Forcbammeri 



99 



— — var. flexuosus 



100 



— sextans ... 



101 



— — var. exilis 



102 



— Morrisi ... 



103 



— moffatensis 



104 



— elegans ... 



106 



— — var. rigens ... 



108 



— caduceus . . . 



109 



— Table of Species of 



110 



Dicranograptus 



111 



— - Groups of 



112 



— Clingani . .. 



113 



— tardiusculus 



114 



— brevicaulis 



115 



— rectus 



116 



— celticus ... 



117 



— Nicholsoni 



118 



— cyathiformis 



119 



— ramosus ... 



119 



— — var. spiuifer . . . 



121 



— — var. longicaulis 



121 



— ziczac 



122 



— furcatus, var. minimus 



123 



— Table of Species of 



124 



Family Diplograptidas 



125 



Climacograptus 



126 



— Groups of 



127 



— scalaris ... 



129 



— — var. normalis 



130 



— — var. miserabilis 



131 



— rectaugularis 



133 



— medius ... 



134 



■ — Tornquisti 



135 



— minimus ... 



135 



— brevis 



136 



— bicornis ... 



138 



— — var. tridentatus 



139 



— — var. peltifer . . . 



140 



— supernus... 



141 



— Wilsoui ... 



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