. An introduction to entomology, or, Elements of the natural history of insects : with plates. Insects. HISTORY OF ENTOMOLOGY. 469 than I can afford; I must therefore refer you to his work for more particular and detailed information on that subject. With regard to the analogies between op- posite points of contiguous circles, you may get a very good idea of it from his diagram of Saprophagous and Thalerophagous Petalocerous beetles, which I here It is a very singular circumstance that in these two circles we have two sets of insects,—one impure in its ha- bits and feeding upon 'putr
. An introduction to entomology, or, Elements of the natural history of insects : with plates. Insects. HISTORY OF ENTOMOLOGY. 469 than I can afford; I must therefore refer you to his work for more particular and detailed information on that subject. With regard to the analogies between op- posite points of contiguous circles, you may get a very good idea of it from his diagram of Saprophagous and Thalerophagous Petalocerous beetles, which I here It is a very singular circumstance that in these two circles we have two sets of insects,—one impure in its ha- bits and feeding upon 'putrescent food, and the other clean and nourished by food that has suffered no decay ^— set in contrast with each other, and that in each of the op- posite groups, the one has its counterpart in some respect in the other. In none is this more striking than the Sca- rabceidce and Cetoniadce, both remarkable for having soft membranous mandibles unfit for mastication, and both living upon juices, the one in a putrescent and the other in an undecayed statea. a Other systems or methods have been promulgated by various authors, as by Schseffer, Scopoli, Geoffroy, &c. Walckenaer and Blainville have proposed one founded on the number of the legs of insects j but those in the text are the principal and best known. — N. Diet. d'Hirt. Nat, xvi. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Kirby, William, 1759-1850; Spence, William, 1783-1860. London, Longman, Hurst, Rees, Orme, and Brown
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Keywords: ., bookcentury1800, bookdecade1820, booksubjectinsects, bookyear1822
