. A manual for the study of insects. Insects. Fig. 13.—Penceiia viridans, (From the Author's Report on Cotton Insects.) The mandibles (Fig. 14, md) consist of two segments, a strong basal one and a claw-shaped terminal one, at the tip of which a poison gland opens (Fig. 15). It is by means of these organs that spiders kill their prey. The palpi are leg- like in form, but differ greatly according to sex. In the female the last segment of the palpus resembles a foot of the spider, and is usually armed with a well-developed curved claw. But in the male the corre- sponding segment is more or less


. A manual for the study of insects. Insects. Fig. 13.—Penceiia viridans, (From the Author's Report on Cotton Insects.) The mandibles (Fig. 14, md) consist of two segments, a strong basal one and a claw-shaped terminal one, at the tip of which a poison gland opens (Fig. 15). It is by means of these organs that spiders kill their prey. The palpi are leg- like in form, but differ greatly according to sex. In the female the last segment of the palpus resembles a foot of the spider, and is usually armed with a well-developed curved claw. But in the male the corre- sponding segment is more or less enlarged, and very complicated in structure (Fig. 16). ^'of clphaVothorax'of The greater number of spiders have four dibie'f^wyma^na; pairs of eyes (Fig. 17), but there may be fip;^J,^st'emum.°'^^'^. 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 Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. joint author. Ithaca, N. Y. , Comstock Pub. Co.


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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895