XXX 
I^vTRODUCTION. 
Corea in 188G may be of some use to entomologists thinking of visiting 
those countries. I commenced work at Foochau at the beginning of April, 
and found insect-life of all kinds most abundant. A friend very kindly 
lending me his house-boat, I was enabled to explore the Yuen-fu and Min 
rivers, changing my collecting-ground every day. This is by far the most 
pleasant mode of collecting known to me ; surrounded by every luxury, with 
all one's apparatus handy, without any packing or unpacking to trouble one, 
an entomologist has nothing to prevent his devoting his whole time to his 
work. 
The country about Foochau is exceedingly beautiful and of a hilly 
character. Vegetation is very luxuriant and almost of a tropical nature, and, 
as might be expected, the Lepidoptera exhibit but few Palgearctic affinities. 
It is to be regretted that, considering the large number of resident Europeans 
in Foochau, so little is known of its Lepidopterous fauna, which must certainly 
be very rich. 
Thinking the season sufficiently advanced, I moved further north and spent 
a week or so in the Snowy Valley, near Ningpo, which had' proved such a rich 
collecting locality to Mr. W. B. Fryer. The valley derives its name from the 
number of cascades, some of great height, which it contains. Comfortable 
quarters are to be had in a large Buddhist monastery and temple, which forms 
a good centre for collecting. It is situated at a considerable elevation among 
the hills, and is surrounded by woods (mostly of fir) and bamboo-jungles. 
The steep slopes of the hills are covered with scrub, azalea and wistaria 
being very plentiful. I was rather too early for this locality, and the results 
were not so satisfactory as I expected ; but I employed a native collector to 
work here later in the season, and he met with greater success. 
Towards the end of April I proceeded to Japan, landing at Nagasaki, where 
I found Lepidoptera plentiful wherever an accessible piece of uncultivated 
ground was to be met witli. This is only the case on hill-sides too steep for 
cultivation; and it is wonderful to see the way iuAvliich the liills are cut into, 
steps, supported by huge banks and walls, and kept constantly irrigated by 
small streams of water, especially in the south. AVherc a good piece of forest 
occurs it is generally almost impenetrable, on account of the dense undergrowth 
