I'm late on all of this having been away from the forums for several weeks but I would second and third any calls for readers here to seek out Saki and John Collier.When i read Saki i got everything i wanted from witty,satirizing his times type author. Everything i assumed people hailed an author like P.G Wodehouse for and then i read he influenced Wodehouse in his bio. I cant remember last time i laughed at subtle,witty humor. Usually i read parody, more crude stand up type humor.
I have the collected short fiction of Saki aka Hector Hugh Munro as well as that NYRB edition mentioned here already of Collier's Fancies and Goodnights which of what I've so far had a chance to read is very good!
Also if you enjoy wit, particularly English wit, then you should also check out Max Beerbohm, a brilliant critic, writer and cartoonist (caricatures) and a contemporary of both Wodehouse and Saki. NYRB have a copy of Seven Men, where he 'turns his comic searchlight upon the fantastic fin-de-siecle world of the 1890s—the age of Oscar Wilde, Aubrey Beardsley, and the young Yeats'.
Nite.