eo 
ie) 
10. 
. Camaraphoria 
PLATE VIII. 
multiplicata, cng. Lateral aspect, of a short variety; cast, 
natural size. Humbleton Hill. 
Lateral. aspect of the specimen represented by figs. 29, 30, 
in Plate VII. 
Internal view (partly restored), showing plates of the 
arch (a); supporting plate of do. (4); crural base or 
platform (c); boss or cardinal muscular fulcrum (@) ; 
spatula-shaped process (e) ; supporting plate of do. (/); 
spurs or crura (g); socket-plates (2). Highly magnified. 
(The socket-plates have inadvertently been marked 6.) 
Diagram of a longitudinal section of the shell exhibiting 
the different internal structures, as lettered in the last 
figure. 
Enlarged view of the platform, spatula-shaped process, 
&c., lookmg down on them. The letters in the last 
figures refer to the same structures. Letter g simply 
represents the origin of the spurs. The upper edge 
of the plate supporting the spatula-shaped process is 
indicated by letter /- 
Enlarged view of the large valve, showing cast of the arch 
(a), and impressions of the veins (2). Humbleton 
Hill. 
Enlarged view of the small valve, showing cast of the plate 
supporting the spatula-shaped process (/), and impres- 
sions of the arteries (7) within the veins. Humbleton 
Hill. 
- Camaraphoria Schlotheimi, Von Buch. Figure (natural size) of a cast showing 
lateral marginal expansions, and impressions of the 
vascular system. Humbleton Hill. 
. Trigonotreta cristata, Sch/otheim. Cast of the large valve, natural size: a, im- 
g ) 
pression of the ventral median plate; 6, impressions 
of the dental plates. Humbleton Hill. 
Cast of the small valve, natural size : a, impressions of the 
socket plates; c, impression of dorsal median plate. 
Humbleton Hull. 
