. Bulletin. Agriculture; Agriculture -- Arizona. Poisonous Animals of the Desert 389 leaoy jaw States are scarcely recognized as being in fact centipedes. These small species are entirely harmless to man, though possessed of the same p(^ison apparatus .for killing prey as the larger ones. As the more tropical regions are approached larger kinds are found, until, in the equa- torial regions, some are said to reach a length of eighteen inches. In Arizona specimens eight inches in length are not rare, and the maximum size reported to the writer is one foot, this, however, being an estimate, and n
. Bulletin. Agriculture; Agriculture -- Arizona. Poisonous Animals of the Desert 389 leaoy jaw States are scarcely recognized as being in fact centipedes. These small species are entirely harmless to man, though possessed of the same p(^ison apparatus .for killing prey as the larger ones. As the more tropical regions are approached larger kinds are found, until, in the equa- torial regions, some are said to reach a length of eighteen inches. In Arizona specimens eight inches in length are not rare, and the maximum size reported to the writer is one foot, this, however, being an estimate, and not an actual measure- ment. The term centipede and cicntopies mean literally hundred feet, and in some parts of our country the small ones are known as "hundred-legged ; As a matter of fact our largest local species has considerably less than one hundred feet, the number being forty-four, or twenty- two pairs. Some smaller but more slender species have as many as 173 pairs. These counts include in every case an anterior pair which act as poison claws or jaws, and a posterior pair somewhat modified and held in an elevated position, the lat- ter being often mistaken for antennae. In this way arises an existing confusion as to which is the head end of the animal. I have even been asked whether there is a. rm. 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 University of Arizona. Agricultural Experiment Station. Tucson : Agricultural Experiment Station, University of Arizona
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