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

P. mirabilis sp. n. seems to be unique among the congeners by the presence of unciform apophyses holding perpendicular to the surface of the epigynal lateral plates. Distribution. Siberia: Middle-Siberian Tableland, upper Kolyma River and northern coast of Okhotsk Sea. Diplocephalus montanus sp.n. (Figs 25-31) Holotype, 6 - Magadan Area, upper Kolyma River, Sibit-Tyellakh, alpine belt of Bolshoy Annachag Mt. Ridge, dwarfish bushes of Salix with Hylacomium along spring, 6. IX. 1986 (leg. YM). - Paratypes. 1 6

t 1 £ (HNHM), 16, 1 £ (SMF), 3_6, 6 ç - together with holotype; 2 6, 1 Ç - same locality, taiga belt, Alnus fruticosa bushes with Sphagnum and Carex in excavations of slope, 30. VII. - 5. IX. 1986 (leg. YM); lő", 1 çj> - Khabarovsk Province, Dzhugdzhur Mt. Ridge, Amka River (left tributary of Ulya River), mouth of Khetana Stream, Sphagnum hillocks in valley forest of Larix dahurica, 19. VIII. 1985 (leg. VZ); 2 j - Taimyr Autonomous Region, Putorana Plateau, Ayan Lake, source of Ayan River, Larix dahurica forest with Hylacomium in valley, 5. VII. 1983 (leg. KE). Description: Total length of male/female 1.95-2. 10/2.05-2.25. Carapace dark brown; its length/width 0. 80-0. 88/0. 68-0. 83 in male, 0. 85-0. 88/0. 70-0. 73 in female; male carapace as in Fig. 25. Chelicerae with 4 promarginal teeth. Legs brownish-yellow; length of joints of legs I/IV 0. 60/0. 68+0. 20/0. 20+0, 50/0. 58+0. 43/. 050+0. 35/0. 35 in male, 0. 60/0. 65+0. 20/0. 20+0. 48/0. 55+0. 43/0. 48+0. 35/0. 35 in female; tibial spines 2211, 1 d of joint in both male and female; Tm I - 0. 34, Tm IV absent. Abdomen dark grey. Genitalia of both male and female as in Figs 26-31. Comparison: The new species is particularly closely related to D. rostratus Schenkel, 1934, but differs from it by the better rounded cephalic elevation of the male carapace, retorted apex of the palpal tibia, longer and more pointed suprategular apophysis, more distinct rims along inner edge of the epigynal lateral plates (cp. THALER 1970). Distribution: Mountain regions of Eastern Siberia; Putorana Plateau, Cherskogo and Dzhugdzhur Mt. Ridges. Diplocephalus sphagnicolus sp.n. (Figs 32-37) Holotype: 6 - Evenk Autonomous Region, Taimura River, mouth of Chambe River„ boggy forest of depressed Larix dahurica with Betula nana, 19.-20. VIII. 1982 (leg. KE).Paratypes. 2 <j> - Taimyr Autonomous Region, Putorana Plateau, Ayan Lake, mouth of Am nundakta River, sparse forest of Larix dahurica with Betula nana, 12. VIII. 1983 (leg. KE); 1 ç (HNHM) - Ayan Lake, mouth of Gulyami River, lichen sparse forest of Larix dahurica with Alnus fruticosa, 7. VIII. 1983 (leg. KE); 1 c- (SMF) - Ayan Lake, mouth of Kapchug River, tundra-like moss heath with Vaccinium uliginosum, 24. V. 1983 (leg. KE); 1 5 - Magadan Area, upper Kolyma River, Sibit-Tyellakh, Sphagnum bog in depression of moraine, 10. IX. 1983 (leg. SB); 1 <j> - same locality, boggy sparse forest of Larix dahurica, 8. DÍ. 1987 (leg. YM); 2 o. - environs of Magadan, Hertner Bay, Nyuklya, Sphagnum and Polytrichum hillocks on maritime terrace, 3. V. 1986 (leg. YM). Description. Total length of male/female 2. 15-2.25/2.18-2.25. Carapace light brown, its length/width 0. 88-0. 90/0. 70-0. 73 in male, 0. 88-0. 90/0. 70-0. 75 in female; male carapace as in Fig. 32. Chelicerae with 4 promarginal teeth. Legs darkyellow; length of joints of legs I/IV 0. 63/0. 70+0. 20/0. 20 + 0. 48/0. 60+0. 40/0. 50+0. 35/0. 38 in male, 0. 73/0. 78+0. 23/ 0. 23+0. 60/0. 70 + 0. 53/0. 55+0. 40/0. 40 in female; tibial spines 2211, 1 1/3 d of joint in female, 3/5 d of joint in male; Tm I - 0.42, Tm IV absent. Abdomen light grey. Genitalia of both male and female as in Figs 33-37. Comparison. The male of the new species is very close to D. cristatus (Blackwall, 1833),, but differs by the more elongated palpal tibia and narrower, unciform, frontal apophysis of the embolic division (cp. WIEHLE 19 60). By the shape of the epigyne the new species resembles D. caucasicus Tanasevitch, 1987, but differs in having well-curved receptacles (cp. TANASEVITCH 1987). Distribution. Siberia: Putorana Plateau, Middle-Siberian Tableland, upper Kolyma River and northern coast of Okhotsk Sea.