On the Spiders Collected during the Swedish Expeditions to Novaya Zemlya and Yenisey in 1875 and 1876

The material collected in 1875 and determined by L. Koch has been revised. The material from 1876 has been determined and a list of 197 species from Russia, Novaya Zemlya and Siberia represented in the two collections is given and in addition 14 species collected by the 1875 expedition in Northern Norway. Hybauchenidium gen.n. of the fam. Erigonidae is established with Erigone aquilonaris L. Koch, 1879, as type species. Eboria sibirica sp.n. (Erigonidae), and Diplocephalus cristatus angustieeps subsp.n. (Erigonidae) are described. A list of the species described and recorded by L. Koch in 1879 with the actual names is given.