PEOCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETING 



661 



I have not observed the eggs of this species but they are probably 

 deposited by the female on the upper surface of the leaf of a tea-plant ■ 

 or orange-tree, one or two ou each leaf. The newly hatched caterpillar 

 eats out the upper epidermis of the leaf, and after it has grown larger 

 the larva eats out almost every vestige of green leaf from the margin. 



We can almost always find one to four caterpillars on a twig and 

 one or sometimes two or more on a leaf. When full-grown the cater- 

 pillar begms to form the whitish small cocoon, between the leaves, 

 and this is sometimes greyish and covered with pale brownish thread. 

 The following table shows our actual breeding data, but each brood 

 was not continued as the eggs were not deposited by the females in 

 several cases. 



hatchec 



observed. 

 7th April 



The above table shows that this insect has about two generations 

 per annum, and that the whole life-cycle occujjies about 110 — 180 days. 



This insect is probably one of the minor pests of the tea-bush, and the 

 collection of the cocoons, and of the caterpillars, are the recommended 

 remedies. 



No. 40. — Amata perixanthia, Hamps. {Mikan-Kanoko.) 

 This species is a widely distributed Amatid throughout the island of 

 Taiwan, and the food plants are only three, orange, tea, and Psidium 

 Guyava, as observed by us up to the present time. I think that Amata 

 lucerna, Wilem., is probably a synonym of this species. 



The eggs are spherical and pale-yellowish, about 0'5 mm. in diameter.' 

 They are irregularly deposited by the handsome parent on the under- 

 side of the leaf, and about two weeks later the tiny caterpillars emerge 

 from the eggs and begin to eat the leaf from the margin, resting on the 

 underside, but it seems they dislike to hve together on a leaf. The 

 full-grown caterpillar is dark greyish, with the head orange-yellow. 

 On each somite there are eight tubercles bearing short j)ale dirty-yellow 

 hairs but the four ventral tubercles on each of the fourth, fifth, tenth, 

 and eleventh somites do not bear conspicuous hairs. The dorsal stripe 



