VIU CONTENTS. 



CHAPTER IV. 



BURROWING INVERTEBRATES. 

 OBUSTACEA. 



The Lakd Crabs and their Habits. — The Violet Land Crab. — Its Burrows, its 

 Combativeness, and its pedestrian Powers. — The Fighting Crab, why so called. 

 — The Eager Crab of Ceylon. — Its Burrows, and Mode of carrying oif the Soil. 

 — The EoBBER Crab. — Its Form and general Habits. — Food of the Eobber Crab. 

 — A soft Bed and well-stocked Larder. — The CHELnRA, and its Earages among 

 Timber. — The Geibblb and its Kin.. '. Page 104 



CHAPTEE V. 

 BURROWING MOLLUSKS. 

 The Boeing Snail of the Bois des Eoches. — Opinions as to its Method of Burrow- 

 ing. — Shape of the Tunnels. — Solitary Habits of the Snail. — The Piddock, its 

 Habits and Appearance. — Structure of the Shell, and its probable Use. — Method 

 of Burrowing. — Use of the Piddock and other marine Burrowers. — The Balance of 

 Nature preserved. — The Wood-boebr and its Habits. — The Date Shell. — Its 

 extraordinary Powers of Tunneling. — The Eazob Shell. — Its Localities and 

 Mode of Life. — ^The Flask Shell and the 'Wateeing-pot Shell. — The Ship- 

 woEM. — Its Appearance when Young and Adult. — Its curious Development. — 

 Its Ravages, and the best Method of checking them. — Its Value to Engineers. 

 — The GiANi Teredo. — ^Form, Dimensions, and Structure of the Shell. — How 

 and where discovered 114 



CHAPTEE VL 



BURROWING SPIDERS. 

 The Scorpion and its Habits. — The Burrow of the Scorpion. — How detected. — 

 Suicide among the Scorpions. — Spiders and their Burrows. — The Atypus. — Ma- 

 dame Merian and her Book of the Bird Spider. — Mr. Bates's Discoveries. — Hair 

 of the Bird Spider. — The Tarantula. — Its Ferocity and Courage. — The Trap- 

 door Spider. — Its Tunnel and the Lining thereof. — Its Appearance under the 

 Microscope. — ^The " Trap-door" itself, and its Structure. — Curious Example of 

 Instinct. — Activity of the Spider. — Specimen in the British Museum. — Strength 

 and Obstinacy of the Trap-door Spider. — An Australian Trap-door Spider ... 128 



CHAPTER Vn. 



BURROWING INSECTS. 

 HTMENOPTEEA. 



The Sauba Ant and its Habitation. — Use of the "Parasor"Leaves. — Mr. Bates's 

 Account of the Insect. — Enormous Extent of the Dwelling. — The Dusky Ant. — 

 Its Strength and Perseverance. — Man and Insect contrasted. — The Beown Ant. 

 — Form of its Habitation. — ^Eegulation of Temperature. — Necessity of Moisture. 

 — How the Ant constructs Ceilings. — Mining Bees. — The Andrena and its bur- 

 rowing Powers. — The Ecceea. — Its Habitation and curious Method of liberating 

 the AntennsB.— The Soolia, its Burrows and its Prey.— The Indian Sphex and 

 its Ingenuity. — The Mellinus and Oxtbelus. — Curious Method of catching 

 Prey.— The Philanthus, its Burrow, and the Food of its Young.— The Humble- 

 BEE — its general Habits. — Locality of its Dwelling. — Development of the Young. 

 — The Lapidary Bee, its Colors, Disposition, and Habits. — The Wasp — its Food 

 and Habitation. — Materials and Architecture of the Nest. — Disposition, Form, 



