263 
THE DARK PORCELAIN. 
Argyromiges Sylvella. 
PLATE XXX. Fig. 1. 
Tinea Sylvella, Haworth. — Phal. Blancardella, Don. xi. PI. 392. 
fig. 2 Argyromiges Sylvella, Curtis, Steph. 
The family Yponomeutida3, to wMch the present 
genus belongs, is constituted by a numerous assem- 
blage of small moths, the largest not exceeding an 
inch in the expansion of the vvings, while serersd do 
not equal the tenth part of these dimensions. The 
palpi are in general long and slender, and usually 
only two in number, a character which distinguishes 
them from the allied group, Tineida;, which possess 
two pair of these organs. 
Tlie name of the present genus bears reference 
to the metallic markings which are conspicuous in 
many of the species. It is known by having the 
palpi very short and drooping, nearly filiform, with 
the terminal joint compressed and obtuse, and 
longer than the two others taken together. TTie 
antennae are about the length of the wings, the 
basal joint robust. Wings rolled round the body 
