S. Mahunka szerk.: Folia Entomologica Hungarica 49. (Budapest, 1988)

0.58-0.60 in female; male carapace as in Fig. 1. Chelicerae with 4 promarginal teeth. Legs brownish-yellow, length of joints of legs I/IV 0. 53/0. 80+0. 20/0. 20+0. 50/0. 65+0. 43/0. 55+ +0. 35/0. 35 in male, 0. 58/0. 68 + 0. 20/0. 20+0. 48/0. 60+ 0. 43/0. 53+0.35/0. 35 in female; tibial spines 1111 (Id of joint) in female, 0000 in male; Tm I - 0. 63, Tm IV absent. Tibia of male palp provided with 2 trichobothria. Abdomen dark grey. Genitalia of both male and female as in Figs 2-6. Comparison. The new species differs from the only hitherto known congener, A. prospiciens (Thorell, 1875), by the considerably better curved embolus, lack of projecting suprategular apophysis, presence of 4 small (not a single larger) teeth on the dorsal of edge of the male palp, larger fungiform epigynal aperture, as well as by a different position of Tm I, being over 0.5 (s. TANASEVITCH 1987). Distribution. Siberia: Putorana Plateau, upper Kolyma, northern Cisokhotia (Magadan and Taigonos Peninsula). Diplocephalus barbatus (L. Koch, 1879) (Figs 7-11) Diplocephalus barbatus

: Kulczynski 1908, Mem. Acad. Sei. St. -Pétersbourg, (8)18(7): 11, pl. 1, figs. 14-17 (3, ç). Diplocephalus barbatus

: Holm 1967, Medd. Grönland, 184(1): 28, figs. 32-36 (3, oj. Material: 1 S - Nenets Autonomous Region, Vaigach Island, Bolvanskiy Nos Cape, 4. VII. 1984 (leg. VbT; 1 3, 2 o. (HNHM) - Vaigach Island, Dolgaya Guba Bay, Talata River, 15. VII. 1987 (leg. VB); I 8_- Yugor Peninsula, Beliy Nos Cape, 17. VI. 1983 (leg. VB); 1 3, 3o.Taimyr Autonomous Region, Dikson, herbaceous vegetation on baidjarakh hills, 20. VII. 1979 (ALT); 1 o. - 80 km S of Dikson, Syradasai River, in stomach of Core g onus sp., 9. VI. 1982 (leg. YC); 1 3 (SMF) - NW Taimyr, western point of Byrranga Mts., Kosoturku Lake, rocks, under stones, 8. VIII. 1986 (leg. ABB); 1 £ - E Taimyr, Maria Pronchistcheva Bay, slope with vegetation of grasses, sedges and dwarfish willows, 20-25. VII. 1973 (leg. YC); 1 ç (SMF) . Yakut Autonomous Republic, Tiksi, 15. VIII. 1985 (VB et NV); 1 3, In- Chukotka Autonomous Region, Kolyuchinskaya Guba Bay, 18. DC. - l.X. 1913 (leg. L. STAROKADOMSKIY, expedition of the boat "Taimyr", ZMMU); 6 j - Vrangel Island, Neizvestnaya River, sparse herbaceous vegetation and hillocks of Carex and Dryas on slope of river valley, 16.23. VIII. 1983 (leg. OK). Distribution. The entire Arctic coast of Siberia from Novaya Zemlya to Vrangel Island (DAHL 1928; KULCZYNSKI 1908; HOLM 1970, 1973; ESKOV 1985); outside the USSR Spitsbergen, northern Greenland and Canadian Archipelago (LEECH 1966). This species seems to be restricted to the northernmost parts of the tundra zone, not extending southwards beyond the southern border of the subzone of arctic tundra. Diplocephalus connatus Bertkau, 1889 Diplocephalus connatus: Wiehle 1960, Tierwelt Deutschlands, 47: 496, figs. 916-925 (3, a). Material. 1 6 - Evenk Autonomous Reeion, Taimura River, mouth of Chambe River, floodland meadow, 24. VIII. 1982 (leg. KE). Distribution. Europe (WIEHLE 19 60); in the Asiatic part of the USSR - Eastern Kazakhstan (A. V. TANASEVITCH, pers. comm. ) and Middle-Siberian Tableland. Diplocephalus cristatus angusticeps Holm, 1973 Diplocephalus cristatus angusticeps: Holm 1973, Zool. Scripta, 2(3): 81, figs. 23, 24, 27 (ö. g). Material: 3 3, 13 ^ - Krasnoyarsk Area, middle Yenisey River, Mirnoye (62°20'N), sandy bank of river, 9.-11. VI. 1978 (leg. KE); 2 3^ 10 o - same locality, shingle bank of Varlamovka River, 6. -28. VIII. 1979 (leg. KE); 2 3, 2 o. (HNHM), 1_3, 1 £ (SMF), 3 3, 2 o Evenk Autonomous Region, Taimura River, between mouths of Neptene and Chambe Rivers, shingle bank of river, 9-13. VIII. 1982 (leg. KE). Distribution. Siberia: lower (HOLM 1973) and middle Yenisey, Middle-Siberian Tableland.