218 The Philippine Journal of Science 1921 
kurumi, walnut [ Juglans sp.]. It is full grown between September and 
October and the imago emerges by the end of October. 
I describe the larva from my original figures as follows : 
Young larva in third ? stage. — Plate 2, fig. 1. Length, 23 
millimeters; light green; a broad diamond-pattern, longitudinal, 
black dorsal stripe with paired red tubercles emitting short, 
spinous black hairs on segments 3, 4, 7, 8, 9, and 10 (counting 
head as segment 1), paired black tubercles, with similar hairs 
on segments 2, 5, 6, 11, 12, and 13; subspiracular line lighter in 
color; head pale green, edged with black; spiracles dark; legs 
dark ; prolegs and claspers green. 
Larva in fifth ? stage. — Plate 1, fig. 10. Length, 65 milli- 
meters. Body yellowish green, head of a darker shade ; dorsum 
covered with short, bristly, yellow hairs with a few long, darker 
hairs interspersed amongst them; segmental sutures whitish; 
spiracles white, encircled with a ring of chestnut brown; sub- 
spiracular line yellowish; legs ochraceous; prolegs dark green; 
claspers yellowish green, with a long black dash at the base. 
My original figure of the larva in the third ? stage agrees 
with that given by Sasaki. Jordan comments on Caligula bois- 
duvali as follows: 
Larva green, above and below with a black-brown, longitudinal stripe, 
the warts of both dorsal rows reddish yellow, full-grown without stripes 
(always ?). On various deciduous trees. Cocoon reticulate. The moth 
in the autumn. From Lake Baikal to Japan in three geographical forms. 
Boisduvali Ersch. [=Eversm.], from Kiachta, Urga and the Kentei Moun- 
tains, southward of Lake Baikal * * *. 
Fallax [Jordan], subsp. nov. (Jonasi Stgr. pt. ; boisduvali auct. pt.) (32d 
as boisduvali). * * * Distributed from Vladivostok, Askold, Ussuri to 
the Amur. 
Jonasi Butler (32b, d). * * * Japan, on the Main Island, [Honshu] 
in September. Two nearly full-grown larvae before me have no longi- 
tudinal stripe above or below. 
Cocoon. — The pupa is enclosed in a cocoon similar to that of Dictyoploca 
japonica but it is smaller and spun with finer mesh. It also resembles, 
as Pryer observes of the cocoon of japoncia, “the wire net in a cartridge.” 
Local distribution. — Honshu, Musashi Province, Yokohama 
(Pryer) : Musashi Province, Tokyo, October and November 
(Wileman) : Shinano Province, Oiwake, September and October 
(Leech) : Shimotsuke Province, Nikko, September and October 
(Leech). Hokkaido (Yezo), Oshima Province, Hakodate, Sep- 
tember and October (Wileman) . Matsumura records Saturnia 
(Caligula) boisduvali from Honshu and Hokkaido. 
