NATURAL HISTORY. 



PAGE 



Crab ANOMOURA, HERMIT CRABS Their Houses The Land Hermits The Robber Crab MACROURA, LOBSTERS 

 The Common Spiny Lobster The Common Lobster The Norway Lobster The Common River Crayfish The 

 Eye of Crustaceans The Brown Shrimp The Common Prawn Blind Crayfish l'J7 



CHAPTER III. 

 CRUSTACEA (concluded). 



STOMAPODA Squilla Mysis ISOPODA Bathynmnus Tanais The " Gribble " Ascllus Arcturus Sphccroma 

 Parasitic Forms A.MPHIPODA The "Sand-hopper" Orchcstia and other Forms Aberrant Amphipods 

 XIPHOSURA King Crabs Character Habits EURYPTEKIDA TRILOBITA PHYLLOPODA Character CLADOCERA 

 OSTHACOD A COPEPODA Parasitic Forms CIRRIPEDIA RHIZOCEPHALA BALANIP.E LEPADID^; Baruacl es . 200 



GRAND DIVISION, OR TYPE. VERMES (THE WORMS). 

 CHAPTER I. 



THE RINGED WORMS. 



The Various Sorts and Conditions of Worms -Characters Classification -ANNELIDA, THE RINGED WORMS 

 OLIGOCH^ETA The Earth Worm Characters Structural Peculiarities- Habits -Other Species The Xui.hr 

 The Tubificidw POLYCH^TA Marine Worms Characters ERRANTIA APHRODITIIXE - Sea Mice Scale 

 Backs The Eunicidse-The Sao Habits The Nereidie The White-rag Worm The Syllid;e- The Phyllodocida; 

 THE TUBE-MAKERS Characters The Lug Worm Habits "Baiters" 011 the Search CIRRATULIDJE Characters 

 The Terebellida? Their Larva; The Serpulidse The Fan Sabella Serpula Vcrmicularis Its Array of Hooks 

 The Protulae and other Tube-makers THE LEECHES Appearance Action of Sucker Characters Different 

 Kinds The Horse Leech The Glutton Aulostoma 224 



CHAPTER II. 



THE GEPHYREA, THE WHEEL ANIMALCULES, THE ROUND AND THREAD WORMS, THE FLAT WORMS. 



GEPHYREA Bolster-shaped Worms Characters ROTIFERA, THE WHEEL ANIMALCULES-Structurc 

 ( 'lassification The Philodinidre The Brachionidte Other Families THE NEMATHELMINTHA, ROUND AND 

 THREAD WORMS -Characters The Thorn-headed Worm- THE THREAD WORMS The Genus Trichina The 

 Trichina spiral is Description Reproduction Their Effects The Whip Worm The Genus Filaria The Guinea 

 Worm The Ascaris The Lung Worm The Genus Mermis THE FLAT WORMS The Tape Worms Characters 

 ReproductionThe Beef Worm THE TREMADOTA THE TURBELLARIA Classification of Venues . . .243 



THE PRICKLY-SKINNED ANIMALS (ECHINODERMATA). 



Position of the Echinodcrmnta in the Animal Kingdom Characters distinguishing them from the other Ihuliatn Sub- 

 divisions of the Group -The Limestone Skeleton : its Various Forms The Digestive Tube The Nervous System 

 The Blood-vascular System The Water-vascular System The Body-cavity and its Contained Corpuscles -The 

 Various Forms of Echinoderm -larvae Direct Development of some Echinoderms in the Southern Seas Distribution 

 of the Group in Space and Time The Echinozoa Structure and Habits of Starfishes, Ophiurids, Urchins, and 

 Holothurians The Trepang-fisheries of the Tropical Seas The Crinoidea Structure and Mode of Life of a 

 Feather-star The Palaeozoic Crinoids Cystids, and Blastoids 259 



THE GROUP ZOOPHYT.A. 

 CHAPTER I. 



THE II YDRO/O A, OR II Y I> R O M E D U S M. 



The Group ZOOPHYTA Class HYDROZOA, OR HYDROMEDUS.E -Characters Colonies Reproduction Order 

 CTENOPHORA Characters Venus' GirdleOrder DISCOPHORA, MEIH'S.K, OR JELLY-FISHES -Appearance -The Disc 

 Method of Reproduction The Lucernariw Order SiPHONOPHORA Characters The "Portuguese Man-of- 

 War" The Calycophora The Physophorse Vdclla Order HYDROIDA Genus Hydra Characters Gemmation 

 Power of Reparation Sub-order TUBULARIA Perif/onim tt-ts Characters Other Tubularians Sub-order 

 CAMFANULAKIA Sertulariiclse Plumulariidaj- Sub-order TRACHOMKDT.S.K Order HYDROCOHALLINA Milleporidiw 

 Description Characters Stylasters Other Hydrocorallinre Classification of the Hydrozoa .... 277 



