PLATE XIV. 
All the figures on this Plate are from specimens in my Collection from Lummaton, 
Fie. 
1. 
INS 
except where otherwise stated. 
PENTAMERUS BREVIROSTRIS, Phillips, sp. (Page 120.) 
Lateral view of a very large and narrow variety. 1a, front view (ventral 
valve uppermost). 
Portion of surface of another similar specimen, X 5. 
2. Dorsal view of a very equivalved variety. 2a, front view (ventral valve 
ois) 
uppermost). 2 b, lateral view. 
. Portion of surface of a specimen enlarged. 
PENTAMERUS BIPLICATUS, Schnuv. (Page 122.) 
. Lateral view of a large specimen with very sharp plaits approximating the 
form P. acutolobatus, Sandberger. 4 a, rear view (ventral valve below), 
Lummaton (?). Torquay Museum. 
. Front view of another specimen of the form P. formosus, Sandberger. 
Lummaton (?). Torquay Museum. 
PENTAMERUS SUBLINGUIFER, Maurer. (Page 123.) 
. Dorsal view of a very large specimen. 6 a, lateral view. 6 b, front view 
(dorsal valve uppermost). 6 c¢, rear view. 
. Dorsal view of a very small specimen. 7 a, lateral view. 7 b, front view. 
. Dorsal view of a slightly larger specimen. 8 a, lateral view. 8 b, front 
view, all enlarged. 
CoNCHIDIUM ? BRITTANIOUM, n. sp. (Page 124). 
. Ventral valve. 9 a, lateral view, showing the striation of the surface. 9 8, 
dorsal view, showing the apparent arrangement of the beak, all enlarged. 
