. Zoology for high schools and colleges. Zoology. SENSES OF INSECTS. 335 The antennae are, in the locust, organs of smell. The palpi are not only organs of touch, but probably, as in some other insects, are endowed with the sense of taste, enabling the locust to discriminate between the different kinds of food, and select that best adapted to suit its wants. It is possible that the labial nerves send branches of special sense to the tongue.. Fig. 284.—Longitudinal section of the facetted eye of asphinx: the eye-capsule or sclera facetted externally {/), and sieve-like within, shows the rod-lik

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. Zoology for high schools and colleges. Zoology. SENSES OF INSECTS. 335 The antennae are, in the locust, organs of smell. The palpi are not only organs of touch, but probably, as in some other insects, are endowed with the sense of taste, enabling the locust to discriminate between the different kinds of food, and select that best adapted to suit its wants. It is possible that the labial nerves send branches of special sense to the tongue.. Fig. 284.—Longitudinal section of the facetted eye of asphinx: the eye-capsule or sclera facetted externally {/), and sieve-like within, shows the rod-like ending of the optic nerve-fibres ; k, layer of the crystalline lens; i, iria-like-pigment zone; ch, choroid composed of pigment cells ; sn, optic nerve ; tr, trachea lost in fine bundles of flbrillEe.—After Leydig, from Graber. The ears are well developed in the locust, and we know that the sense of hearing must be delicate, not only from the fact that a loud alarum with kettles and pans afEects them, but the movements of persons walking through the grass invariably disturb them. Besides this, they produce a fid- dling or stridulating sound by rubbing their hind legs against their folded wing-covers, and this noise is a sexual. 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 work.. Packard, A. S. (Alpheus Spring), 1839-1905. New York, H. Holt and Company