(commonly called jiggers). Sand-fleas, which penetrate under the skin of the feet, but particularly the toes. As soon as they accomplish this, an itching sensation is felt when the chigre ought to be removed by means of a needle breaking the skin. No uneasiness follows; but should this precaution be neglected, the insect breeds in the toe, and produces sometimes dreadful sores. These insects are found in the West Indies, and the adjacent shores of the Gulf of Mexico.--Carmichael's West Indies, Vol. I. p. 188.