RHOPALOCERA NI MONICA. 



perfect state ； early spring forms are small and briglilly colored, often witli a row of blue spots on the 

 back margin of the hind wing, but as the temperature increases they become larger and darker until they 

 reach a size nearly twice that of English specimens. During the hot months the males are often quite 

 black, and this continues until tlie last brood in November ； a difference of 20 miles is, however, sufficient 

 to account for small li び ht-colour males appearing in one locality and black males in another. Some years 

 apo, in this monlli, i.e. November, I collected tlie small light-colour males in tlie neiglibourhood of Yoko- 

 hama, and the next day took black males in Bosliiu not more than twenty miles from Yokohama, but by 

 working from Boshiu toward the north, through Kadzusa, I found the dark form to be less abundant until 

 at Kanosan tliey were entirely replaced by the pale form. 



50. Lycssna bsetica, Linn. ( P1 - 4, fig. 22.) 



Localities ― Yamato, Ogasavvara, Yokohama, Ryul く yu. 



Foud-plant — a cultivated Legmninous plant lilce Llie scarlet runner, but with pinkish-white flowers, DolicJios ciiltratus 

 (Jap. Fuji-maine). 



Time of appearance ― March (Ogasawara); August, September (Yamato, Ryukyu); October, (Yokohama). 



This butterfly has a most extensive ranee, and I have taken it in every Eastern country in which I 

 have collected. It is abundant on the Island of Labuan, and also in O^asawara, and is therefore pro- 

 bably to be found in all tlie intervening islands wherever its food-plant is cultivated. It is also found 

 in Europe, and is one of the great prizes for the English collector, a few specimens having been taken on 

 the south coast near Brighton. I believe, however, it would soon be no great rarity there if its food-plant 

 were cultivated in suitable localities. It is a very local insect, and seldom voluntarily nies far from its food- 

 plantj to wliich.it is very destructive, the larva eating the unfolded leaves and flowers also burrowing into 

 the youno- pods. It only appears about Yokohama late in the year, at which time its food-plant is in bear- 

 ing, and as this is not ' ，ucli cultivated it is a scarce species there. 



51- Lycsena argiades, Pall. (Pi- 4， fig- 23A, 23B.) 



L. hellotia, Men. 



Locality ― V okohaina. 



Time of appearance ― March to October. 



This species is very abundant, and a succession of broods appears during the year ； they vary much 

 in size, and female specimens are often to be found with more or less blue on the upper side. 



52. Lycsena argia, Men. (PL 4， fig'. 24A, 2 4 b.) 



L. japonicaj Murray. (PI. 4， fig". 24c.) 

 Locality ― Yokoliania. 



Time of appearance ― March to November. 



