Fishes burying themselves daring the dry season The _protopterus_ of the Gambia Instances in the fish of the Nile Instances in the fish of South America Living fish dug out of the ground in the dry tanks in Ceylon Molluscs that bury themselves The animals that so bury themselves in India Analogous case of Theory of æstivation and hybernation Fish in hot water in Ceylon List of Ceylon fishes Instances of fishes falling from the clouds _Note_ on Ceylon fishes by Professor Huxley Comparative note by Dr. Gray, Brit. Mus. _Note_ on the Bora-chung CHAP. XI. MOLLUSCA, RADIATA, AND ACALEPHÆ. I. _Conchology_.--General character of Ceylon shells Confusion regarding them in scientific works and collections Ancient export of shells from Ceylon Special forms confined to particular localities The pearl fishery of Aripo Frequent suspensions of Experiment to create beds of the pearl oyster Process of diving for pearls Danger from sharks The transparent pearl oyster (_Placuna placenta_) The "musical fish" at Ballicaloa A similar phenomenon at other places Faculty of uttering sounds in fishes Instance in the _Tritonia arborescens_ Difficulty in forming a list of Ceylon shells List of Ceylon shells II. _Radiata_.--Star fish Sea slugs Parasitic worms Planaria III. _Acalephæ_, abundant The Portuguese man-of-war Red infusoria _Note_ on the _Tritonia arborescens_ CHAP. XII. INSECTS. Profusion of insects in Ceylon Imperfect knowledge of I. _Coleoptera_.--Beetles Scavenger beetles Coco-nut beetles Tortoise beetles II. _Orthoptera_.--Mantis and leaf-insects Stick-insects III. _Neuroptera_.--Dragon flies Ant-lion White ants Anecdotes of their instinct and ravages IV. _Hymenoptera_.--Mason wasps Wasps Bees Carpenter Bee Ants Burrowing ants V. _Lepidoptera_.--Butterflies The spectre Lycænidæ Moths Silk worms Stinging caterpillars Wood-carrying moths Pterophorus VI. _Homoptera_ Cicada VII. _Hemiptera_ Bugs VIII. _Aphaniptera_ IX. _Diptera_.--Mosquitoes Mosquitoes the "plague of flies" The coffee bug General character of Ceylon insects List of insects in Ceylon CHAP. XIII. ARACHNIDÆ, MYRIOPODA, CRUSTACÆ, ETC. Spiders Strange nets of the wood spiders The mygale Birds killed by it _Olios Taprobanius_ The galeodes Gregarious spiders Ticks Mites.--_Trombidium tinctorum_ _Myriapods_.--Centipedes Cermatia Scolopendra crassa S. pollippes The fish insect _Millipeds_.--Julus _Crustacæ_ Calling crabs Sand crabs Painted crabs Paddling crabs _Annelidæ_, Leeches.--The land leech Medicinal leech Cattle leech List of Articulata, &c. _Note_.--On the revivification of the Rotifera and Paste-eels LIST OF ILLUSTRATIONS. Page View of an Elephant Corral Frontispiece