SYSTEMATIC INDEX. 







PAGE 







page 



iBT I.— THE CEPHALASPID^ 



1 



Osteostraci {continued) — 





Introduction 





1 



List of Species {continued) — 





History 





2 



Cephalaspis (Zenaspis) Salweyi 



52 



Division into Two Sections . 





5 



— Lightbodii 



55 



Nature of Shields 





5 



Auchenaspis 



. 56 



Zoological Position 





13 



— Salteri . 



. 56 



Synopsis of Divisions ... 





14 



— Egertoni 



57 



Systematic Descriptions 





16 



- (Eukeraspis) pustul 





Heterostraci 





16 



ferus 



. 58 



List of Species ... 





19 



Didymaspis . 



. 59 



Scaphaspis 





19 



G-rindrodi 



59 



— Llojdii ... 





.. 20 







— rectus 





.. 23 







truncatus 





.. 24 



Part XL— THE ASTEEOLEPID^ 



. 63 



Ludensis ... 





25 



Introduction 



. 63 



Cyathaspis 





.. 26 



Terminology 



. 64 



— Banksii ... 





26 



Classification 



70 



— (?) Symondsi 





27 



Systematic Descriptions 



71 



Pteraspis 





28 



Asterolepis 



71 



— Crouchii ... 





.. 30 



— maxima 





75 



rostratus ... 





.. 32 



Pterichthys 





. 90 



— Mitchelli ... 





., 33 



— Milleri 





96 



Osteostraci 





.. 33 



— productus 





101 



List of Species 





42 



Microbrachius . , . 





. 104 



Cephalaspis 





43 



Dicki 





. 105 



— (Eucepbalaspis) ] 



Lyellii 



43 



Bothriolepis 





. 107 



— — 1 



Lgassii 



di 46 



— major 



114 



— — 1 



Powrie 



i 47 



— obesa 



. 120 



— — ] 



f'agei 



.. 49 



— leptocheirus 



. 122 



— — a 



bsper 



.. 50 



— hydrophila 



. 124 



— (Hemicyclaspis) 



Murcl 



li- 



— macrocephala . 



. 128 





soui 



51 



— cristata 







. 130 



