||In the ”Checklist of the spiders of Central Europe” 945 species are listed for Switzerland. During the last few years numerous species have been found which represent new records for Switzerland and that, at least partly, have already been published. This 4th appendix to the catalogue of Swiss spiders presents fourteen species recorded for the first time in Switzerland: Carniella brignolii Thaler & Steinberger, 1988, Theridion cinereum Thorell, 1875, Diplocephalus foraminifer (O. P.-Cambridge, 1875), Panamomops affinis Miller & Kratochvíl, 1939, Troxochrota scabra Kulczy?ski, 1894, Pardosa fulvipes (Collett, 1876), P. sphagnicola (Dahl, 1908), Hahnia microphthalma Snazell & Duffey, 1980, Archaeodictyna consecuta (O. P.-Cambridge, 1872), Brommella falcigera (Balogh, 1935), Cheiracanthium campestre Lohmander, 1944, Drassodex drescoi Hervé, Roberts & Murphy, 2009, Thanatus firmetorum Muster & Thaler, 2003 and Xysticus viduus Kulczy?ski, 1898. Thirteen further species are presented that were already published elsewhere. The current number of species in Switzerland is thus 972. As special curiosities, five species are presented that will not yet be entered into the checklist but nevertheless may happen to be found in human surroundings.