Abstract
Polydesmus biscayensis sp. nov. and P. asturiensis sp. nov. are described and figured based on material housed in the Museo Nacional de Ciencias Naturales in Madrid. The specimens were collected in six localities in the Asturias and Cantabria provinces, including four caves. In addition, Polydesmus haroi Mauriès & Vicente, 1977 and Polydesmus racovitzai Brolemann, 1910 are transferred from Propolydesmus Verhoeff, 1895 to Polydesmus Latreille, 1802/1803 after examining the gonopod morphology. A key to the Iberian Polydesmus species is presented.