x THE LIFE OF THE MOLLUSCA 
PLATE 
X. Various Forms oF SHELLS IN THE GASTROPODA 
PROSOBRANCHIA (T#NIOGLOSSA). 
XI. Various Forms oF SHELLS IN THE GASTROPODA 
PROSOBRANCHIA (RHACHIGLOSSA). 
XII. Various Forms oF SHELLS IN THE GASTROPODA 
PROSOBRANCHIA (TOXOGLOSSA), THE TECTI- 
BRANCHIA, AND OF THE ANIMALS OF NUDIBRANCHIA. 
XIII. Various Forms oF SHELLS IN THE PULMONATA. 
XIV. A Worm-EatineG Stue (Testacella scutulium). 
XV. StrRuctuRE AND SHELL OF THE SCAPHOPODA 
(ELEPHANTS’-TusK SHELLS). 
Various BIVALVES, SHOWING THE ANIMALS EXTENDED, 
XVI. TopoGcraPHy oF BivALvE SHELLS, 
XVII. Various Forms oF BivaLtvE SHELLS: PRoro- 
BRANCHIA AND FILIBRANCHIA, 
XVIII. Various Forms oF BIVALVE SHELLS: EULAMELLI- 
BRANCHIA (A. OsTRACEA, B, SUBMYTILACEA, AND 
C, TELLINACEA). 
XIX. Various Forms oF BIVALVE SHELLS: EULAMELLI- 
BRANCHIA (D. VENERACEA, E. CaARDIACEA, 
F, CHamacga, AND G, Myacza). 
XX. Various Forms or BIvALvE SHELLS: EULAMELLI- 
BRANCHIA (H, ADESMACEA AND I, ANATINACEA) 
AND SEPTIBRANCHIA, 
XXI, CEPHALOPOD STRUCTURE AND Form oF ANIMAL, ETC, 
XXII. Various Forms oF THE SHELL 1m CEPHALOPODA 
TETRABRANCHIA (NAUTILUS AND AMMONITES). 
XXIII. REsTORATION OF ANIMAL AND SHELL OF BELEMNITES. 
XXIV. Forms oF THE SHELL IN THE BELEMNITE AND ITS 
DESCENDANTS, 
XXV. Various Forms oF THE ANIMALS AND INTERNAL 
SHELLS oF CEPHALOPODA Diprancuiata (CUTTLE- 
FISH, PEN-AND-INK-FISH, AND OcToPUS). 
XXVI, Various Forms oF Sza-BUTTERFLIES (PTEROPODA) 
AND HETEROPODA, WITH SHELLS OF PELAGIC 
Fry oF Mo.tyusca, aND SurF-DWELLING PUL- 
MONATES, ETC. 
