PLATH XVi. 
All the figures on this Plate are from specimens in my Collection from Lummaton. 
CamaropHoria Puruuipsit, Davidson, sp. (Page 141.) 
Fig. 
1. Dorsal view of a young specimen without fold or sinus, enlarged. 14a, lateral 
view. 1b, front view. 
2. Dorsal view of a very curious variety, with only two (or three) plaits on 
the fold, enlarged. 2u, lateral view. 
CAMAROPHORIA ? RHOMBOIDEA, Phillips, sp. (Page 140.) 
3. Dorsal view of an elongate specimen, with a small deep fold, enlarged. 
3a, lateral view. 30, front view. 
4. Dorsal view of a doubtful specimen of peculiar form, with very expanded 
sides, enlarged. 4a, lateral view, showing the straight oblique slope of the 
margins. 
RHYNCHONELLA P OGWELLIENSIS, Davidson. (Page 133.) 
5. Dorsal view of a large specimen, enlarged. 5a, lateral view. 5b, front view. 
STROPHEODONTA NoDULOSA, Phillips, sp. (Page 150.) 
6. Upper valve of a small specimen, with many equal undulating strize, showing 
some signs of geniculation, enlarged. 
NI 
. Another ungeniculated specimen, showing the acute-angled wing, enlarged. 
8, 9, 10. Similar ungeniculated specimens, showing a few elevated major 
radiations, enlarged. 
