low tubercles. When the period of its change approach¬ 
es, it fpins a web of extremely ftrong yellowifh filk, in 
which it lies during its ftate of chryfalis. The Cater¬ 
pillars are very common in China, and other parts of 
the Eaft-Indies, as well as in America; and as ^ie 
Moth breeds thrice a year, it might, in all probability, 
be made a very profitable article of commerce; fince 
the filk it produces, is extremely ftrong and rich. 
Madam Merian has obferved this in her account of the 
animal. 
See her Hi/lory of the Surinam InfeSis, tab. 52. 
This Caterpillar feeds principally on Orange leaves. 
What adds, in a moft remarkable manner, to the 
beauty of the Moth, is the curious ftrucfture of the An¬ 
tennae, or Hornswhich are pinnated in a quadruple 
feries of fibres, fo as to appear as if double, or com- 
pofcd of two pair of Antennae laid over each other. 
