REPORTS ON THE STATE OF SCIENCE, ETC. 
Upper Cambrian (Olenus fauna). 
Lingulella davisi 
Orthis lenticularis . 
Olenus sp. 
Agnostus pisiformis 
Parabolina spinulosa 
Hymenocaris vermicauda 
Upper Cambrian (Tremadocian). 
Dictyograptus socialis 
Hyolithus operculatus 
Angelina sedgwicki 
Asaphellus homfrayi 
Shumardia pusilla 
ORDOVICIAN. 
Arenigian. 
Didymograptus extensus 
hirundo 
Phyllograptus sp. 
Tetragraptus sp. 
Orthis carausi 
Calymene tristani . 
Ogygia selwyni 
Llanvirnian. 
Didymograptus murchisoni 
EM bifidus 
Ampyx nudus 
Aiglina binodosa 
Llandeitian. 
Nemagraptus gracilis 
Climacograptus bicornis . 
Dicranograptus ziczac 
Diplograptus See ee adi teretiusculus 
Ogygia buchi. : : F 
Asaphus tyrannus 
Trinucleus fimbriatus 
Caradocian. 
Diplograptus calcaratus . 
Dicranograptus ramosus . 
Pleurograptus linearis 
Orthis actonize 
,  calligramma 
Strophomena expansa 
Leptzna sericea : 
Trinucleus concentricus . 
Calymene senaria 
Ashgillian. 
Dicellograptus anceps 
Orthograptus truncatus . 
Kchinospherites arachnoideus 
Tentaculites anglicus 
Illenus bowmanni 
Staurocephalus sp. 
Phillipsinella parabola 
Brachiopoda 
Trilobita 
2° 
Phyllocarida 
Graptoloidea 
Mollusca 
Trilobita 
7 
” 
Graptoloidea 
2° 
Brachiopoda 
Trilobita 
3° 
Graptoloidea 
Trilobita 
” 
traptoloidea 
99 
Trilobita 
33 
Graptoloidea 
Brachiopoda 
7 
Trilobita 
” 
xraptoloidea 
Cystidea 
Mollusca 
Trilobita 
” 
en 
