VI CONTENTri. 



CHAPTER III. 



BUEllOWING REPTILES. 



The REniLER and their hibernation — The Land Tortoise and its winter 

 dwelling — The Crocodiles— Snakes — The Yellow Snake of Jamaica — Its 

 f;eneral habits — Its burrowing powers discovered — Presumed method of 

 removing the earth . . . 84 



CHAPTER IV. 

 BURROWING INVERTEBRATES. 



Cr.USTACEA. 



The Land Crabs and their habits — The Violet Land Crab — Its burrows, its 

 oombativeness, and its pedestrian powers — The Fighting Crab, why so called 

 — The Racer Crab of Ceylon — Its burrows and mode of carrying off the soil — 

 The Robber Crab — Its form and general habits — Food of the Robber Crab — A 

 Eoft bed, and well-stocked lai'der — The Chelura, and its ravages among timber 

 — The Gribble and its kin . . . . 87 



CHAPTER V. 



BURROWING MOLLUSCS. 



The Boring Snail of the Bois des Roches — Opinions as to its method of 

 burrowing — 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-borer and its habits — The Date 

 Shell — Its extraordinary powers of tunnelling — The Razor Shell — Its locali- 

 ties and mode of life — The Flask Shell and the Wateeing-Pot Shell — The 

 Shipworm — Its appearance when young and adult — Its curious development — 

 Its ravages, and the best mode of checking them — Its value to engineers — 

 The Giant Teredo — Fomi, dimensions, and stnicture of the shell — How and 

 where discovered . 9.5 



CHAPTER VI 



BURROWING SPIDERS. 



The ScoRnoN and its habits — The burrow of the Scorpion— How detected — 

 Suicide among the Scorpions— Spiders and their burrows — The Atypus — 

 Madame Merian and her book of the Bird Spider — Mr. Bates' 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, audits 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 11(1 



