of Abbot's drawings in the same work, nor does it correspond any belter to Guilmng's figure of 

 Oiketicus McCayi, though about the same size. 



As soon as the drop-worms are hatched, they make and conceal themselves in little silken cases, 

 open at each end, and covered externally with bits of leaves, twigs, <fcc. These cases are enlarged, 

 as the insect increases in size, by the addition of more materials witliiu and without, and finally 

 become oblong oyal pods, with long somewhat cylindrical extremities. The inhabitant carries its 

 house about on its back, as a snail does its shell, when it is moving and feeding; fastens it by a few 

 threads when it wishes to rest ; or lets it drop by a thread when it wishes to descend from one 

 branch to another : hence, in Philadelphia, where these insects are abundant, they have acquired 

 the name of di-op-worms. These worms attain their full size by the middle of September, and then 

 fasten the upper end of their cases to a twig of the tree by a strong silken band. The weight of 

 the case, with its elasticity, closes the upper orifice, from which the worm has been accustomed to 

 protrude its head and fore legs when feeding ; the insect then turns round within its pod, so as to 

 direct its head toward the lower cylindrical orifice, and thus awaits its change to a chrysalis. The 

 worms which produce the female insects are much larger than those of the males, and there is the 

 same difference in the size of their pods and of their elirysalids. Female worms attain the length 

 of one inch and a half, those of the males only about one inch. The head and fore part of the 

 body are white, spotted with black ; the rest of the body is livid or blackish. The first three seg- 

 ments are each provided with a pair of stout jointed claw-like legs. The tail and four intermediate 

 segments are furnished with a pair of very short holders, or prop-legs. The male chrysalis is a 

 little more than six-tenths of an inch long, of a dark brown color, and exhibits the sheaths of the 

 wings, and limbs of the future moth, which escapes from it toward the end of September or early 

 in October, immediately before which the chrysalis forces itself half way out of the lower end of 

 its case. The female chrysalis is nine-tenths of an inch long, or more, of the same color as that of 

 the males, but without any vestige of wing-sheaths or limbs. There is a prominent ridge over the 

 fore part of the body. Wlien the included female is matured, the skin of the chrysalis splits at the 

 ridge, so as to form an opening in the shape of the letter T, and through this opening the approaches 

 of the male moth are made, the female remaining all the while not only enclosed in her pod, but 

 also encased in the skin of the chrysalis. In this skin, also, she lays her numerous eggs, gradually 

 withdrawing her emaciated body as she fills the pupa skin, and finally closing the upper part of 

 the skin with a thick layer of fawn-colored down, stripped from her own body. Having finished 

 her labora, she crawls out of the pod, entirely shriveled up, drops off and dies, or more rarely 

 perishes at the mouth of the pod. She is found to be entirely destitute of wings, and her legs are 

 extremely minute, and resemble little tubercles. The male moth on the contrary, is fully provided 



with wings and limbs. Its body, which measures 

 rather more than half an inch in length, is covered 

 with long blackish-brown down. Its wings are 

 serai-transparent, and are very scantily clothed with 

 blackish scales, which are thickest on the margins 

 and veins. The white spot, represented by Mr. 

 Abbot on the fore wings of his figure, is entirely 

 wanting in all the males that I have seen. The an- 

 tenntc are curved at the tips, and are doubly feath- 

 ered from the base to beyond the middle. The 

 tongue is not visible. The wings expand one inch 

 and one-tenth, or more. The male moths are very 

 impatient of confinement, and keep in constant mo- 

 tion, which rendei-s it very difficult to obtain per- . 

 feet or unrubbed specimens. The eggs remain secure 

 in the shell of the skin of the female chrysalis, en- 

 IIW "^yiK closed in the suspended pods, through the winter, 



US /Klf-'/r and are hatched in the spring when the trees are 



well clothed with leaves, upon which the little 

 W*W 'Iff'iA worms, having left the pods, immediately disappear, 



and each one begins to cover its tender body with 

 a silken and leafy case. The figure represents one 

 of the pods or cocoons, suspended by a twig, when the insect has prepared for its final transforma- 

 tion ; also a male moth, both of the natural size. 



TuE Late Professor Adrikn de Jus.steu. — Advices from Paris mention the decease of this distin- 

 guished l)otanist, upon whom the mantle of his great ancestore may be said to have fallen. Among 

 the most cf)nscientions and exact of systematical Avrilers ho also ranked higli as a jiliysiologist, as 

 his well known elementary work has shown the world. For many years his healtli lind been delicate, 

 and of late had been deplorable. Uy his decease a vacancy occurs in the Presidunl's chair of the 

 French Institute, in tliat of Professor of- Rural Botany in the Jarden des Plant's (which, it is said, 

 will not be filled up), and among the twenty foreign members of the Horticultural Society of Lon- 

 don, — J. L., in London Gardeners' Chronicle. 



