LIST OF ILLUSTRATIONS. 
VII 
BIOLOGY OF THE OYSTER-GROUNDS OF SOUTH CAROLINA. 
Page. 
Plate LXII. — Fringing Oyster Ledge, showing living Raccoon Oysters and the Formation of Shell-banks, Stono 
River, east shore 362 
LXIII. — Oyster Flat, showing Mud Banks and Natural Draining Trenches 362 
LXIV. — Oyster Island. A dense community of Raccoon Oysters occurring in muddy, marsh-draining Streams - 362 
LXV.— Tidal Zone of Oyster Distribution in South Carolina, indicated upon Piling of Wharf, Sullivan Island . . 362 
LXYI. — An Oyster Flat, showing far and wide the extent of Raccoon Areas 362 
LXVII. — (1) A photo-micrograph of the diatom, Surirella gemma. (2) Food of the South Carolina Oysters; a 
few of the Typical Organisms 362 
THE PRESENT METHODS OF OYSTER-CULTURE IN FRANCE. 
Plate LXVIH.— (1 and 2) Flat Oyster ( Ostrea edulis ) ; specimen from Belon, 2$ years old. (3 and 4) Portuguese 
Oyster ( Ostrea angulata ) ; specimen from the Tagus 
LXIX. — (1) Cancale; oyster dredging. (2) Cancale; Low Tide after the Dredging; the Sorting of the Oysters. 
LXX. — (1) Auray ; the River at Low Tide, with Mud Flats exposed, showing Collectors inPlace. (2) Auray ; 
the Camion Collectors in place ; a Case of Elevage for temporary use seen in the Foreground 
LXXI.— Trehennarvour, near Auray ; the Collectors of wooden trays ( Plateaux) . (2) Arcachon ; the Gabar6t 
Collector in position 
LXXII Auray ; D6troquage ; W orkers engaged in separating Seed Oysters from a Tray collector. (2) Can- 
cale; Guardian of Park, and case for rearing Seed Oysters 
LXXIH. — (1) Cancale ; the Barrier Oyster Park ; (2) Arcachon ; an Oyster Park with low Banks of Fascine 
and Clay 
LXXIY. — Arcachon; Parks of the same kind as in preceding figure; a General View showing their size and 
arrangement. (2) Ossegor, near Bayonne; a natural tidal Lake fed and drained by a shallow, swift- 
running Creek : 
LXXV. — (1) Arcachon; the Oyster Boat. (2) Arcachon; an Alleyway for transport, passing between neigh- 
boring Parks 
LXXVI. — Sables d'Olonne; View of great basin of Elevage. (2) View of the Claires, showing the Height, 
Width, and Character of the earthen banks that form their outlines 
LXXVII. — Brenneguy; the Pai'k for Seed-culture in a large closed basin. (2) Marennes; View of the Mouth 
of the large Canal which passes inland and feeds Systems of Claires on either side 
LXXVm. — (1) Marennes; View of the Claires for Greening the Oysters. (2) Marennes; a Basin of Degorge- 
ment, concreted, drained by compartments 
Figures in Text: 
The Bouquet and Planche collectors 
363 
388 
A CONTRIBUTION TO OUR KNOWLEDGE OF THE MORPHOLOGY OF L AMELLIBRAN CHIATE MOLLUSKS. 
Plate LXXIX.— Figs. 1 to 4 436 
LXXX. — Figs. 5 to 10 436 
LXXXI.— Figs. 11 to 14 436 
LXXXIL— Figs. 15 to 23 436 
LXXXIII. — FIGS. 24 to 32 436 
Lxxxrv.— FIGS. 33 to 38 436 
LXXXV.— Figs. 39 to 44 436 
LXXXVI.— Figs. 45 to 51 436 
LXXXVII.— Figs. 52 to 64 436 
LXXXVIII.— Figs. 65 to 70 436 
- LXXXIX.— Figs. 71 to 74 436 
XC.— Figs. 75 to 76 436 
XCI.— Figs. 77 to 82 436 
XCII Figs. 83 to 86 436 
XCIII.— Figs. 87 to 95 436 
XCIV.— Figs. 96 to 97 436 
Figures in Text ; 
Figs. 1 to 3 428 
