164 The Philippine Journal of Science leis 



Chabarovsk and Nicolaievsk, for instance, do not differ from the European 

 form; however, small specimens, similar to the type-form are found also in 

 the Ussuri district. 



The following- description of the larva of Odonestis potatoria 

 Linn, is given by Wilson,-' and my original figure of the larva 

 (Plate II, fig. 1) agrees well with this description. 



Larva. About three inches long, and hairy; dorsal area blue-grey, 

 minutely irrorated with black, and speckled with bright yellow dots, some 

 of these latter almost form a subdorsal line; on each side of the back is a 

 row of short black tufts of hair; along each side is a series of larger tufts 

 of white hair; above and between these white tufts there are a number of 

 orange-colored spots and streaks ; on each side of the second segment are two 

 warts, from which proceed rather long tufts of hair, and there are long 

 tufts of black hairs on the third and twelfth segments; the remaining 

 hairs are pale yellowish-brown; spiracles buff; head speckled with two 

 shades of yellow; legs and claspers hairy. Rolls in a ring when touched. 

 [Great Britain, Wilson.] 



Griinberg -^ describes the larva of potatoria as follows: 



Larva blackish grey with a slight tinge of blue, dorsally with extended 

 irregular yellow spots, which form stripes in very dark specimens; hair 

 of body and head light brown. Dorsal tufts and brushes of hair black. 

 The lateral hair spots white. In young larvae the dorsal markings are 

 bright orange-yellow. The larvas emerge in August and first devour part 

 of the egg-shell, afterwards feeding on hard grasses (Carex, Dactylis, ' 

 Luzula), also on Leontodon. They hibernate after the third change of 

 skin from the end of October, or November, until April, and are ready to 

 pupate in June. The fusiform cocoon is pale yellow, being often attached 

 to the stalks of Sparganium and Phragmites; pupa glossy dark brown, or 

 blackish brown. 



The length of my larva is about 70 millimeters, or nearly 

 2.75 inches. 



It will be observed that Griinberg describes the larva as 

 blackish gray with a slight tinge of blue. In my original figure 

 this blue tinge is also slightly perceptible laterally. On segment 

 8 it is conspicuous, as just above the proleg on this segment a 

 narrow transverse blue line commences, which encircles the 

 body from side to side (Plate II, figs. 1 and 3). 



Pupa. — The -pupa is inclosed in a fusiform, dirty whitish brown 

 cocoon of leathery texture attached to thfe stem of bamboo grass 

 (sasakusa). 



Local distribution. — Specimens of potatoria from the following 

 localities are in my collection : 



"Wilson, Larvae of British Lepidoptera (1880), 75, PI. 15, figs. 1, la. 

 '' GRiJNBERG, Seitz's Macrolep. Faun. Pal. (1911), 2, 164. 



