6 | PLA Te. CX. 
were white become black by the fame procefs ; in this caterpillar we 
have obferved a fimilar change: a fpecimen which was of a plain green 
as before defcribed, became fuddenly fpotted with black as fhewn in 
our plate, that fkin being caft off it aflumed its former appearance 
and became a pupa. 
It feeds on grafs, nettles, &c. near the fides of ditches, and is found 
fporting in the evening, when in the fly ftate among the grafs and 
herbage. 
The Caterpillar becomes a Pupa about the beginning of June.—It 
affixes itfelf by the tail to a ftalk of grafs in the fame manner as thofe 
of the Butterfly genus, and like them is often found with the head 
fufpended downwards; it can by a fudden {pring turn itfelf upright 
again. 
In a little book entitled the AURELIAN’s PockeT Companion, 
by Mofes Harris, we find this fpecies defcribed, and called the White 
Plumed, but the Linnzan fpecified Name Didaétyla is added:—And 
under the Linnean name Pentadactyla (our prefent fpecimen) he has 
defcribed the Brown plumed*.—T he fame confufion is extended to 
his folio work the AURELIAN. In Plate 1. he has figured the White 
plumed under the fpecific name DidaStyla, and in Plate 30, the Brown 
plume, under Pentadactyla. Linnzus has comprifed all thofe Lepi- 
dopterous Infects whofe wings appear to confift of feveral diftin& 
feathers, connected only at the fhafts, under the fubdivifion Aude, 
but Fabricius has given them the new name PTEROPHORUS, and 
added the name Alucitz to a fmall divifion of the Tinea, as Phal. 
Chriftyloftella, &c. of Linz. 
The Phal. Pentadactyla appears in the perfect ftate about the latter 
end of June, fometimes earlier. 
* Another fpecimen of the fame divifion of the genus (ua) but of a brown 
colour * Alis fiffis fufcis, &c.”’ Linn. 
PLATE 
