CONTENTS 
fugce )—The False Scorpions (Order Pseudoscorpiones )•—The Harvest-Spiders (Order 
Opiliones) — Suborder Laniatores — Suborder Palpatores — Group Bicinulei — The 
Mites and Ticks (Order Acari )—Aberrant Types, ..... 
CHAPTER VII.—The Jointed Animals,— concluded. The Sea-Spiders, King-Crabs, 
Crustaceans, etc.,—Classes Pantopoda , Gigantostraca, Crustacea, etc. 
Characters of Sea-Spiders—The King-Crabs (Class Gigantostraca) —Existing Forms (Order 
Xiphosura )—Order Merostomata —Order Trilobita — Crabs, Lobsters, Crayfish, etc. 
(Class Crustacea )—Characteristics of the Class—Typical Crustaceans (Subclass Malaco- 
straca)— Order Decapoda — Short-Tailed Group (Suborder Brachyura )-—Long-Tailed 
Group (Suborder Macrura )—Cleft-Footed Group (Order Schizopoda) —The Mantis- 
Shrimps (Order Stomatopoda )—Sessile-Eyed Series ( Edrioplithalmcita )—Order Isopoda 
—Order Amphipoda —Subclass Entomostraca —The Barnacles (Order Girripedia) — 
Bivalved Group (Order Ostracoda ) — Oar-Footed Group (Order Copepoda) —Order 
Cladocera —Leaf-Footed Group (Order Phyllopocla )—Class Prototracheata, 
CHAPTER VIII.— Stone-Lilies, Star-Fishes, Sea-Urchins, and Sea-Cucumbers,— 
Subkingdom Echinodermata. 
Characteristics of the Group— Distinction of the Classes—Mode of Life—The Cystids (Class 
Gystidea) —The Stone-Lilies or Crinoids (Class Grinoidea) —The Blastoids (Class Blas- 
toidea) —The Star-Fishes (Class Asteroulea) —The Brittle Stars (Class Ophiuroidea)— 
The Sea-Urchins (Class Echinoidea )—The Sea-Cucumbers (Class Holothuroidea) —De- 
velopment of Echinoderms, ........ 
CHAPTER IX.—The Molluscs, or Shell-Fish,—S ubkingdom Mollusca. 
Definition of the Group—Growth—Coloration—Age—Reproductive System—Food—Organs 
of Sense—Locomotion—Uses in Nature and to Man—Noxious Molluscs—Distribution— 
Classification—Squids, Cuttle-Fishes, and Nautili (Class Cephalopoda )—Characteristics 
—Two-Gilled Group (Order Dibranchiata )—Octopus Tribe ( Octopodidce )—Other Families 
— Argonautidce —Suborder Decapoda —Squids ( Loliginidce )— Sepioliclce — Onychoteuthidce 
and Chiroteuthidce —The Cuttle-Fishes ( Sepiidce )— Spirulidce —Four-Gilled Group (Order 
Tetrabranchiate) — Nautilidce —Allied Families, ...... 
CHAPTER X.—The Molluscs,— continued. Class Gastropoda. 
Distinctive Features of Gastropods—Lung-Breathing Group (Order Pulmonata )—Suborder 
Stylommatophorcc —Shelled Slugs ( Testacellidce )—True Slugs ( Limacidee )—The Snail 
Tribe ( Helicidce )—Other Families—Suborder Basommatophora —Earlet Shells ( Auri- 
culidce) —Pond-Snails, etc. (Limnceidce , Physidce, and Chilinidce )—Hind-Gilled Group 
(Order Opisthobranchiata) —Naked-Gilled Subgroup (Suborder Nudibranchiata) —Sec¬ 
tion Anthobranchiata —Doris Tribe ( Doridopsidce , Doridce, etc.)—Section Inferobranchiata 
—Section Polybranchiata —Section Pellibranchiata —Section Parasita —Covered-Gilled 
Subgroup (Suborder Tedibranchiata )—Suborder Pteropoda —Sections Gymnosomata and 
Thecosomata —Front-Gilled Group (Order Prosobranchiata )—Suborder Pectinibranchiata 
—Section Toxoglossa —Cones ( Conidce ) — Auger-Shells (Terebridce) — Pleurotomidce 
Cancellciriidce —Section Bhachiglossa —Olives ( Olividce )—Harps (Harpidce) Marginellidce 
—Volutes (Volutida) — Tulip-Shells (Fasciolariidce) — Conch-Shells ( Turbinellidce )— 
Whelks ( Buccinidce )—Dog-Whelks ( Nassidce) —Dove-Shells ( Columbellidce ) Murices 
( Muricidce )—Section Tcenioglossa —Tritons ( Tritonidce )—Tun-Shells ( Doliidcc ) Cow ries 
( Cyprceido) —Wing-Shells (Strombidce)—Cerithiida>— Worm-Shells ( Vermetidee)—Melan- 
iidee — -Strepopomatidce —Periwinkles ( Littorinida) — Bissoida ? Hydrobiidce \ iviparous 
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