oo bd 
“I 
PLATE 
. Campylodiscus clypeus Ehr 
,, huretii Breb. 
,,  Hibernicus Ehr. 
. Biddulphia aurita (Lyng) 
Breb. 
Biddulphia Rhombus (Ehr) 
WSm. 
. Biddulphia Rhombus var 
trigona Cl. 
. Biddulphia Baileyii WSm. | 
22. 
8. ee ee anulata Roper 
Io. 
,, turgida WSm. 
. Cerataulus Smithii (Ralfs) 
VH. 
11. Amphitetras antediluviana 
(Ehr). 
12. Triceratium favus Ehr. 
,, alternans Bail. 
,5 armatum Roper. 
,,  variabile Bright. 
. Eucampia Zodiacus Ehr. 
