358 ^^6 Philippine Journal of Science i9i6 



%. 5; Stgr. and Reb., Cat. Lep., Pal. (1901), 1, 392, No. 4428; 

 Leech, Trans. Ent. Soc. Lond. (1898), 349, No. 261; Matsumura, 

 Cat. Insect. Jap. (1905), 1, 183, No. 1529; Nagano, Nawa's Insect 

 World [Konchu Sekai (Jap.)] (1907), 11, 489, PI. 13, larva, pupa, 

 imago, c? 2, and (1912), 16, 512; Matsumura, Thousand Insects of 

 Japan [Nihon Senchu Dzukai (Jap.)] (1911), suppl. 3, 3, PI. 30, fig. 

 3, 5; Jordan, Macrolep. of the World, Faun. Pal. (1910), 2, 13, 

 PI. 3a; MiYAKE, Tokyo Zool. Mag. [Tokyo Dobutsugaku Zasshi 

 (Jap.)] (1907), 19, No. 220, 41; PI. (unnumbered), fig. 5; SASAKI, 

 Insects Injurious to Fruit Trees [Kwaju Gaichuhen (Jap.)], 194 

 (larva) ; Matsumura, Classification of Insects [Konchu Bunruigaku 

 (Jap.)], pt. 1, 233. 



Elcysma translucida Butl., Trans. Ent. Soc. Lond. (1881), 4; Pryer, 

 Trans. Asiat. Soc. Japan (1883), 43, No. 82; Leech, Proc. Zool. 

 Soc. Lond. (1888), 612, No. 155. 



Elcysma caudata Brem., Lep. Ost.-Sib. (1864), 97, PI. 8, fig. 8; Elwes, 

 Proc. Zool. Soc. Lond. (1890), 387, PI. 34, fig. 6; Stgr., Rom. Mem. 

 Lep. (1892), 6, 248; Stgr. and Reb., Cat. Lep. Pal. (1901), 1, 

 392, No. 4428a; Jordan, Macrolep. of the World, Faun. Pal. (1910), 

 2, 13, PI. 3a; Sasaki, Insects Injurious to Fruit Trees [Kw^ajii 

 Gaichuhen- (Jap.)], 5th ed. (1911), 194, PI. 60b, larva, imago, c?. 



The larva figured (Plate III, fig. 4) was taken in May, 1901 

 (figured May 21), at Yoshino, Yamato Province, Honshu, on 

 swnomo {Prunus communis Huds.), a species of plum tree. I 

 have bred the imago on several occasions from larvae taken at 

 Yoshino, and I have never found them elsewhere. I have found 

 the larva living in a gregarious state on sumomo and another tree 

 which my Japanese collector named me-ga-hadzusa. This, I 

 presume, is a local name, as I am unable to find it in Matsumura's 

 Catalogue of Japanese trees and plants. 



The first time that I found the larvae of Elcysma westwoodii 

 was on June 23, 1895, at Imoseyama, Yoshino. They were feed- 

 ing on a me-ga-hadzusa, a tall tree with rank-smelling white 

 flowers. The branches of this tree had been almost entirely 

 denuded of foliage. However, there were very few larvae left, 

 as they had evidently all pupated, but I found under the tree a 

 number of their curious boat-shaped cocoons fixed to the leaves 

 of dwarf camellias and oak bushes. The second time I went to 

 Yoshino was on June 11, earlier in the year by twelve days, and 

 judging from my experience of 1895, I hoped to find the larva 

 in greater abundance, but I was disappointed, as there were very 

 few to be found. In 1901 I paid another visit to Yoshino about 

 May 15 and succeeded in finding them in great numbers feeding 

 on sumomo. 



Nagano writes at length on the metamorphoses of E. west- 

 woodii and gives the following details : 



The flight of the imago is sluggish and it is easy to capture. The 



