AND THEIR TRANSFORMATIONS. 73 
SPECIES 1.—GLUPHISIA CRENATA. Prater XIV., Fic. 15. 
Synonymrs.— Bombyx crenata, Esper; Borkhausen; Ochsenheimer (Notod. er.); Godart ; Boisduval (Gluphisi 
a cr.) 
Bombyx crenosa, Hiibner, Bomb., t. 4, f. 12. 
This species has the fore wings broad, and without a lobe on the hind margin, ashy-grey, with two brownish- 
black crenated streaks, and two bars of brown, one near the base and another in the middle, on which is a 
yellowish stigma ; the ciliais alternately dark and light ; the hind wings pale, with two dusky fasciz terminating 
near the anal angle in a slightly darker patch. 
The caterpillar is found in August on the black poplar, and resembles that of Pterostoma palpina: it is pea- 
green, with dorsal and lateral pale stripes. Discovered by Mr. H. Doubleday in Ongar-park Wood, Essex, 
in June, 1839, and again found there in June, 1841. 

PTILOPHORA*, Srepuzens. (NOTODONTA, pars, Borspuvat.) 

This genus is at once distinguished by the singularly feathered antenne of the males, by the fore wings 
which are sub-pubescent and pilose, the posterior margin angulated with hair near the base ; the space occupied 
by the branches of the median vein very broad, the margin itself between these branches being very slightly 
emarginated ; the palpi small, and not porrected ; the abdomen rather short ; the caterpillars smooth, and without 
dorsal or subapical tubercles. The antennz of the females are slightly serrated. 
SPECIES 1—PTILOPHORA PLUMIGERA. Puare XIV., Fie. 18, 19. 
Synonymes. — Bombyx plumigera, Wien. Verz.; Fabricius ; | Phat. (Bomb.) variegata, Villars; Stephens, Ill. 2, pl. 14, fig. 1 
Hiibner ; Esper ; Ochsenheimer; Godart ; Boisduval (Notod. pl.) ; | (Ptiloph. plum.); Wood, Ind. Ent. pl. 6, f. 33. 
Curtis, pl. 328 (Ptiloph. plumig.). 
This curious species measures from 11 to 1% inch in expanse. The body and fore wings are of a reddish 
ochre colour, glossed with pale purple, a slight obsolete blotch near the base, an arcuated stripe beyond the 
middle, and the outer ‘margin being paler ; the antennz brown ; the hind wings have a rosy grey tinge, with a 
very indistinct fascia across the middle. In the female the colour of the fore wings is still more uniform. 
The caterpillar is of a greenish colour, with a leaden dorsal stripe, and several pale lateral ones. It feeds on 
the maple, sallow, and birch in May, and the moth appears in October and November. It is a rare species, but 
is occasionally found, especially in the larva state, in Darenth and Birch Woods. 

* From the Greek, in allusion to the soft feathery antenne borne by the males. The specific name plumigera indicates the same peculiarity, 
but as it is improper to change specific names without absolute necessity requires it, it would have been more correct to have selected a generic 
name of a different signification: It is equally incorrect, in order to remedy the evil, to adopt Villars’s more recent specific name variegata for 
the typical species. 

