54 
SERPULA plana. 
TAB. DCXXXV .— fig A. 
Spec. Char. Attached, involute, discoid, smooth ; 
base broad; aperture slightly expanded, 
nearly circular. 
Syn. Serpula plana. Woodward , Geol. Norfolk , 
t. 5. f 9. Morris , Catal. 66. 
A small shell with only one or two turns ; it is smooth, 
excepting a few sharp ridges produced by the expanded 
lip at successive periods of growth. 
From Portsdown, Kent. Woodward’s specimens were 
from Eastern Norfolk. 
SERPULA pusilla. 
TAB. DCXXXV. — -fig. 5, 
Spec. Char. Attached in part, involute, subdis- 
coid ; the free portion erect, cylindrical ; base 
expanded; surface obscurely granulated; 
aperture slightly contracted. 
A small shell from the chalk of Norwich ; it is attached 
to a young Exogyra globosa. The granulations are obscure 
and arranged in lines. 
SERPULA Turbinella. 
TAB. DCXXXV.— /g. 6. 
Spec. Char. Wound into the form of an elon- 
gated cone attached by its apex ; surface 
nearly smooth ; whorls flattened, aperture 
contracted. 
From Portsdown, with S. Ilium. 
