64G PrvOCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETIIN'G 



long. The wing-slieaths reach just beyond the second segment. On 

 the fourth and fifth abdominal segments there is a row of minute pro- 

 cesses near the posterior margin of the dorsum ; the seventh and 

 eighth abdominal segments bear a distinct row of tiny spines, which 

 are directed behind, near the anterior margin of the dorsum ; each 

 segment is finely transversely striolate on about the anterior half or two- 

 thirds ; the anal segment is strongly curved below at the apex which 

 bears two rather inconspicuous short processes below. It is a constant 

 character that the old skin of the last-stage larva projects at right angles 

 for nearly its whole length, the anal end being free and the dorsum 

 being below, but not quite straight. 



I have as yet not succeeded in breeding this species throughout 

 the whole Hfe-cycle. Picking off the cases is the only control measure. 



No. 25. — There is another small Psychid pest on the tea bush, found 

 in the district of Koshun-prefecture, in October. The larval case is 

 very long and slender, like a long straight spine, and is about 25 mm. 

 long or about 2 5 mm. thick at the base, when probably full-grown. 

 This is greyish brown, and does not carry fragments of leaf, twigs or 

 bark, but is composed of very fine vegetable matter and of silky thread, 

 the numerous very fine rings being comiected one with another. These 

 rings camiot be distinctly seen with the naked eye, but through a 

 microscope. I have not reared the moth of this species, and it is not 

 kno\\^i to occur on any other plants. It is probably one of the most 

 minor pests of the tea-plant. 



No. 26.—Zeuzera coffece, Nietn. {Kohii-Gomafu-Bokuto.) 



This species was known as ptjrina, L., in Formosa for a long time, 

 and the name has been accepted by the author. 



This Cossid is found in May throughout the island, especially in 

 mountainous districts, but its occurrence is not abundant. I reared 

 this insect from a tea-trunk only once. This probably shows that it 

 is not a serious pest of tea in our island. 



No. 27. — Euproctis conspersa, Butl. {Cha-Dokuga.) 



This species is very common in Formosa, and we can find it through • 

 the whole year on tea-bushes. 



There are apparently two distinct forms of the caterpillar, of which 

 the first form is yellow, having a somewhat pale brownish or reddish 

 dorsal stripe and two very narrow yellowish white subdorsal stripes 

 which are margined with a blackish tinge at the thoracic portion, while 



