This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 Excerpt: ...is about one sixth inch in length, greenish white in color with the head light brown; the contents of the alimentary canal show through the semitransparent body wall as a greenish or brownish stripe. The larva is legless and only slightly flattened; the constrictions between the segments are rather deep but obtuse; the surface of the body is smooth and clothed with dense, very short, microscopic hairs interspersed with a few larger ones. (Fig. 36.) The mine.--After entering the leaf directly from the underside of the egg, the young larva eats out a narrow linear burrow, or mine, an inch or less in length, leaving the outer layers of the leaf intact. This part of the mine usually follows a tortuous course but may be nearly straight. The larva next enlarges its mine into an...