The entomologist's text book : an introduction to the natural history, structure, physiology and classification of insects, including the Crustacea and Arachnida . abs sometimes attain the length of twoor three feet. They inhabit the tropical seas, frequenting thecoasts, and api)earing to be found only in the East Indies andthe shores of America. According to M. Leconte, they aregiven to pigs for food, and the long and pointed tail is some-times employed by the Indians for the points of their eggs are eaten by the Chinese. 2. Siphonostomata (Latreille), in which the mouth iseviden
The entomologist's text book : an introduction to the natural history, structure, physiology and classification of insects, including the Crustacea and Arachnida . abs sometimes attain the length of twoor three feet. They inhabit the tropical seas, frequenting thecoasts, and api)earing to be found only in the East Indies andthe shores of America. According to M. Leconte, they aregiven to pigs for food, and the long and pointed tail is some-times employed by the Indians for the points of their eggs are eaten by the Chinese. 2. Siphonostomata (Latreille), in which the mouth isevidently more or less suctorial, and the carapax composedof a single piece. It comprises the two families Caligidee andDichelestionidcB. In the parasitic family Calujidoe, the body is covered byan oval or semilunar transparent shield, flattened above, withtwelve legs, the four last pairs of which are feathered andpinnate, being admirably formed for swimming. The tail ismore or less elongated and exposed, and terminated by twoappendages. The genus Argulus is established for the recep-tion of a small but very curious (British) animal found upon FISH PARASITES. 121. the animal magni6ed; 2, oneof the large anterior suckingfeet ; 3, the rostrum ; 4, natu-ral length. various small fresh-water fish, ii})on the blood of which itsubsists, sometimes to the destruction of its victim. It isthe Monoculus foliaceus of Linnaeus,and its natural history and structure,in the ditferent stages of its exist-ence, have been detailed by theyounger Jurine in the most satisfac-tory manner, in the seventh volumeof the Annales du Museum dHis-toire Naturelle. The first })air of legsis large and short, and shaped some-what like a cup, since it is by theseorgans, w^hich probably act like acupping machine, that the msect attaches itself to small young resemble tlieii- parents in form, though their lo-comotive organs are very differently constructed. The othergenus, Caligus, is destitute of the large cup-
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Keywords: ., bookau, bookcentury1800, booksubjectcrustacea, booksubjectinsects
