19,2 Wileman: Japanese Lepidoptera, VI 211 
figured in its various stages. This larva was figured in the 
third ? stage (Plate 1, fig.l ), on September 19; in the fourth ? 
stage (Plate 1, fig. 2), on October 1; in the fifth ? stage (Plate 
1, fig. 3, lateral aspect; fig. 4, dorsal aspect), on October 9; in 
the sixth ? stage, when it measured 66 millimeters in length, 
on October 26, 1900 (Plate 1, fig. 5). This larva and the rest 
of the brood were nearly all full-grown by October 26, but they 
all failed to develop imagoes after pupation as they were in- 
fested by the larvse of an ichneumon fly. Several specimens 
of this fly emerged from the cocoons of Sarnia pryeri in April, 
1901, and another emerged on June 27, 1901. 4 
A male imago was bred from a larva of Sarnia pryeri taken 
at Yoshino, Yamato Province, Honshu. This larva pupated in 
October, 1900, and the imago emerged on June 15, 1901. I also 
bred a specimen at Kobe, Settsu Province, Honshu, in August, 
1901. Other food plants of the larva are maple, momiji ( Acer 
palmatum Thunb.), and plantain, basho ( Musa basjoo Sieb.). 
Nawa gives the following notes on Attacus cynthia Drury: 
The larva 5 feeds upon shinju [ Ailanthus giandulosa Desf.] ; nurude 
[ Rhus semialata Murr. var. osbeckii DC.] ; konzui [Latin name unknown, 
not given by Matsumura in his Shokubutsu Mei-i]. The body, head and 
ventrum, are pale yellow; pale indigo, fleshy tubercles on each segment 
which are clothed with a white flourlike substance. 
The larva and the imago appear twice in the year. The first brood 
of the imago emerges about June or July, the second brood about 
September, or October. The larvse which emerge from the second brood, 
when full grown, spin their cocoons and hibernate in the pupal stage, 
the imago emerging at the commencement of the following summer, when 
the ova are then deposited. 
I find that in the final stage of the larva the white powder 
on the tubercles disappears. It seems to appear after the third 
? stage when the larva turns from yellow to white. 
Sasaki 6 gives descriptions and figures of the larva, cocoon, 
and imago of Attacus pryeri Butler ( Attacus cynthia Drury) 
and a short record of its life history. He says: 
The larvse emerge from the ova about middle or end of June, and 
are full-grown by the end of July. The imago emerges about the com- 
mencement of August and deposits ova which hatch in about three weeks at 
4 This ichneumon fly has been identified by Claude Morley, Entomologist 
43 (1910) 11, as Phnpla luctuosa Smith, Trans. Ent. Soc. London (1874) 
394. 
6 The larva figured by Nawa measures 72 millimeters. 
6 Insects Injurious to Japanese Trees [Nihon Jumoku Gaichuhen (Jap.)] 
ed. 3 (1910) pt. 3, 74, pi. 198. 
