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Odonestis potatoria, sexual difference of colour in. Odour, correlation of, with colour of skin; of moths; emitted by snakes in the breeding season; of mammals. Oecanthus nivalis, difference of colour in the sexes of. Oecanthus pellucidus. Ogle, Dr. W., relation between colour and power of smell. Oidemia. Oliver, on sounds produced by Pimelia striata. Omaloplia brunnea, stridulation of.
The sunny hours of spring have their singer, the Field-Cricket of which I have written; while in the summer, during the stillness of the night, we hear the note of the Italian Cricket, the OEcanthus pellucens, Scop. One diurnal and one nocturnal, between them they share the kindly half of the year. When the Field-Cricket ceases to sing it is not long before the other begins its serenade.
Harelda glacialis. Hares, battles of male. Harlan, Dr., on the difference between field- and house-slaves. Harris, J.M., on the relation of complexion to climate. Harris, T.W., on the Katy-did locust; on the stridulation of the grasshoppers; on Oecanthus nivalis; on the colouring of Lepidoptera; on the colouring of Saturnia Io. Harting, spur of the Ornithorhynchus.
Our musical instruments have their dampers; that of the OEcanthus pellucens rivals and surpasses them in simplicity of means and perfection of results.
Conspicuous colours may be of use to these insects, by giving notice that they are unpalatable. Mr. Ch. Some cases, however, are known of sexual differences in colour in this Order. The Oecanthus nivalis, Harris, 'Insects of New England, 1842, p. 124. Mr. Little need here be said, except as to colour.
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