truncatus, Lapw.

vesiculosus, Nich.

Whitfieldi, Hall

Didymograptus bifidus, Hall

divaricatus, Hall
extensus, Hall

geminus, His.

indentus, Hall

Murchisoni, Boeck
nitidus, Hall

patulus, Hall

pennatulus, Hall

serratulus, Hall

superstes, Lapw.

V-fractus, Salt.

Glossograptus ciliatus, Emm.

Hincksii, Hopk.

Idiograptus margaritatus, Bronn
Lasiograptus Harknessi, Nich.
Leptograptus flaccidus, Hall

Loganograptus Logani, Hall

Monograptus argutus, Lapw.

attenuatus, Hopk.
Becki, Barr.
bohemicus, Barr.
Clingani, Carr.
colonus, Barr.

cyphus, Lapw.

exiguus, Nich.
fimbriatus, Nich.

galaensis, Lapw.

gregarius, Lapw.
Halli, Barr.

Hisingeri, Carr.

...

*

**

The classification of the Cambrian

***

and Silurian rocks, Sedgwick prize ...

runcinatus, Lapw.
Sedgwicki, Portl.

...