408 MODERN CLASSIFICATION OF INSECTS. 
Chimophila, and Diurnea. The caterpillars of the last-named genus 
are described by Gédart as flat, furnished with two rows of verrucose 
dots, each terminated by a little hair, armed with a corneous shield 
on the back, with the third pair of pectoral feet in form of a battle- 
door, living and metamorphosing between the leaves; in walking 
they spread their pallet-shaped feet very much, and, when dis- 
turbed, make a noise with them, which faintly resembles the rolling 
of a drum, according to Treitschke, as quoted by Curtis. 
But the most beautiful species in the family are those minute 
moths with metallic spotted wings, the majority of which, in the larva 
state, are leaf-miners; such are the genera Microsetia, Glyphy- 
pteryx, Pancalea, and Argyromyges. My jig. 112. 16. represents 
a portion of a rose leaf mined by Microsetia ruficapitella*, the larva 
of which is extremely interesting, offering, as far as I can perceive, 
no rudiments of legs, except fleshy angular projections of the skin 
of very small size; and the head is capable of being almost entirely 
withdrawn into the prothorax. De Geer has given the history of 
this insect (Mém. pl. 31. f.13—21. and 30. fig. 20.), and has re- 
presented the fleshy leg-like tubercles (as in fig. 112. 17.) of a much 
larger size than I saw them, and eighteen in number, placed on 
consecutive segments. My figure 112.18. and 19. represents the 
upper and under side of the larva, and 20. the pupa of Argyromyges 
Cramerella, which I have reared from mined oak leaves ; here the larva 
has three pairs of membranous ventral feet. De Geer has figured the 
history of this and another allied species in his Mémozres, tom. i. pl. 30. 
and 31. (See also Swammerdam, Book of Nature, pl.44. f. 18—21.) Mr. 
Curtis has figured the history of Arg. autumnella, the larva of which 
appears to have been naked, and the cocoon ingeniously suspended by 
threads from each end like a hammock (Brit. Ent. pl. 284.). There 
is an interesting memoir upon a species with similar habits in the 
Trans. Soc. Geneva, 1837. The history of a minute, but highly in- 
teresting species, with white wings, varied with brown spots, is given 
by De Geer, tom. i. p. 468. pl. 32. f. 1—, the cocoon of which is long, 
semioval, and ribbed; the construction of which, by crossing the threads 
ina remarkable manner, has formed the last subject of De Geer’s four- 
teenth Mémoire, as well as of one by Lyonnet ( Recherches, pl.19.).¢ De 
* Lewis (in Entomol. Mag. vol. i. p. 423.) has published a memoir on this 
species. 
+ Lyonnet has also published the details of the history of some other species with 
somewhat similar cocoons. (Recherches, pl. 33.) 
