PROCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETING 649 



and there is a narrow interrupted reddish-yellow band near the anterior 

 margin ; these flecks and bands are not conspicuous on the thoracic 

 but are obsolescent. The venter has two or three or four narrow 

 reddish-yellow flecks on each somite and round the base of 

 each proleg or leg there is an incomplete reddish-yellow ring. The 

 head is brownish-yellow, bearing sparsely fine pale hairs. The first 

 somite has two large conspicuous black protuberances on each side, 

 the tufts on which are very pale brownish and somewhat long, and on the 

 yellowish dorsum there are many white and yellowish hairs intermixed ; 

 the second and third somites each has ten roundish yellowish tubercles 

 which bear short whitish hairs ; the remaining somites have eight large 

 roundish brownish tubercles on each one of which the dorsal four are 

 larger than the rest and covered with rather short pale brownish-yellow 

 hairs mth a few whitish ones intermixed, and the others are small and 

 not roundish, and bear longer hairs ; all tubercles are sxirrounded with 

 a narrow dull orange-yellow ring, except the lowermost one on each 

 side which is dull orange-yellow. Legs, prolegs, and anal legs are duU 

 yellow, slightly infuscate, the legs bearing long pale castaneous claws. 



The full-grown larva measures about 2-5 mm. in length. 



^ 



The caterpillars disperse in all directions in two or three days after 

 hatching, and usually live on the upperside of the leaf, eating from its 

 margin. When full-grown they come between the leaves or twigs, and 

 spin a dark greyish cocoon which is very sparsely interwoven with the 

 larval hairs, and in which they pupate in two or five days. The moth 

 is well attracted by light and the female deposits her eggs on the upper 

 surface -of a leaf, in a mass of about 50 — 2-50 eggs covered with hairs 

 from the orange-yellow anal tuft. The egg hatches in about six to 

 •eight days. The whole hfe-eycle occupies about forty days in June 

 or July, but it may be longer in early spring. 



Nothing for the control can be added at the present time to what 

 has been said under the previous species. 



No. 29. — Porthesia montis, Leech. {Taiwan-ki-Dokuga.) 

 This species is almost always found throughout the Island of 

 Formosa, and it is much more common on the tea-plant than the previous 

 species, but its attack is much less than that in E. conspersa, Butl. The 

 food-plants, found up to the present in Formosa, are as follows : — 

 several Cruciferse, egg-plant, potato, Canavalia ensiformis, Pkaseolus 

 vulgaris, Gardenia florida, Ficus carica, Bcehmeria nivea, Spinacea oleracea, 

 Eriobotrya japonica, pear-tree, Pnmus communis, peach-tree. Primus 

 mume, rose, orange, Ricinus communis, grape, cotton, and tea. 



