CONTEXTS. V 



Page 

 Lob-worm 64 



Respiration in Serpulae. Habits of the Erranles 65 



Sea Long-worm, Sea-mouse 6G 



Hair-worm, and traditionary Error. Luminosity of some Annelids G7 



CLASS II. CIRRIPEDA BARNACLES AND ACORN SHELLS. 



Tradition respecting Barnacles 69 



Young state of Barnacles and of Acorn-shells 70 



Their Transformations. Formerly classed with Mollusca 71 



Cheapness of the Pleasures of Natural History 72 



CLASS III. CRUSTACEA CRABS, LOBSTERS, SHRIMPS, &c. 



Name, Distribution, Form, Characteristics 73 



Reproduction, Respiration 74 



Vision, Eyes of Trilobites 77 



Metamorphoses 78 



Land-crabs 80 



Classification. Limulus or King Crab 81 



Spider-crabs 82 



Edible Crabs 83 



Pea Crabs. Hermit Crabs 84 



Lobster. Spiny Lobster 85 



Cray-fish: its Food, Habits, Change of Shell 86 



Shrimps. Prawn 88 



Sand-hopper. Cyclops 89 



Daphnia. Limnoria 90 



Lenuea Opossum Shrimp, as shown by the Microscope .. 91 



CLASS IV INSECTA INSECTS. 



External Structure 93 



Circulation and Respiration 94 



Nervous System 9G 



Senses 97 



Metamorphoses 100 



Food, Digestive System 103 



Mouth 104 



Wings and Wing-covers 105 



Enumeration of the several Orders 106 



ORDER I COLEOPTERA BEETLES 107 



Great Water Beetle. Death-watch 107 



Glow-worm. Dor-beetle 108 



Sacred Beetle. Tiger Beetle 109 



Cockchafer Nut Weevil 110 



Burying Beetle Number of Coleoptcra Ill 



ORDKII II. ORTHOPTERA CRICKETS, LOCUSTS, ETC 112 



Leaf Insects 112 



Mantis 113 



Crickets. Cockroach Ill 



Locust , ,,,....,..., ,. .., ,,.. . .., 1 15 



