S. Mahunka szerk.: Folia Entomologica Hungarica 47/1-2. (Budapest, 1986)

No. 68. Tanh Hoa, Sam Son. 26.1.1986. - Berlese and Nematoda samples from litter and soil of a secondary forest. No. 69. Tanh Hoa, Sam Son. 26.1.1986. - Berlese and Nematoda samples from soil and moss from grassy soil a hill-side. No. 70. Tanh Hoa, Sam Son, seaside. 26.1.1986. - Berlese and Nematoda samples from lichens and moss from stones. No. 71. Tanh Hoa, Sam Son, seaside. 26.1.1986. - Berlese and Nematoda samples from dry grassy vegetation among the itones. No. 72. Tanh Hoa, Sam Son, seaside. 26.1.1986. - Berlese and Nematoda samples from moss growing in cracks of rocky wall. No. 73. Tanh Hoa, Ngoc Lac, Lake. 26.1.1986. - Sifted from decayed debris near to the shore. No. 74. Tanh Hoa, Ngoc Lac. 26.1.1986. - Singling from under barks of lying trees. No. 75. Tanh Hoa, Sam Son. 26.1.1986. - Singling on the shore and in the ebb and tide region. No. 76. Tanh Hoa, City. 26.1.1986. - Singling from under stones or planks in gardens of the city. No. 77. Ha Noi, Ho Tay. 29.1.1986. - Singling from the lake. No. 78. Ha Son Binh, Hoa Binh, 2 km to Da Bac. 30.1.1986. - Netting and beating from vegetation along a stream. No. 79. Ha Son Binh, Hoa Binh, 2 km to Da Bac. 30.1.1986. - Singling from under stones. No. 80. Ha Son Binh, Hoa Binh, 2 km to Da Bac. 30.1.1986. - Earthworms collected by diluted formaline. No. 81. Ha Son Binh, Hoa Binh, 2 km to Da Bac. 30.1.1986. - Singling from under stones in stream-bed and by treading mud. No. 82. Ha Son Binh, Hoa Binh, 8 km to Da Bac (war monument). 30.1.1986. - Netting and beating on vegetation along the stream. No. 83. Ha Son Binh, Hoa Binh, 8 km to Da Bac (war monument). 30.1.1986. - Sifted material from decaying debris, roots and litter from cracks of a steep slope of a rocky wall. Extracted in Moczarsky-Winkler bags (partly extracted in Budapest, in Berlese funnels from 6.

H.

1986. till 28.11.). No. 84. Ha Son Binh, Hoa Binh, 12 km to Da Bac. 30.1.1986. - Netting and sweeping from vegetation of stream-bed. No. 85. Ha Son Binh, Hoa Binh, 12 km to Da Bac. 30.1.1986. - Lamping near to stream-bed, at the margin of a forest. Time: 17.30 (25 C°) - 21.00 (22 C°). No. 86. Ha Son Binh, Tan Lac, (20 km from Hoa Binh). 31.1.1986. - Singling and netting in a stream valley. No. 87. Ha Son Binh, Tan Lac, (20 km from Hoa Binh). 31.1.1986. - Singling and netting in a stream valley. No. 88. Ha Son Binh, Tan Lac, (21 km from Hoa Binh), 31.1.1986. - Sweeping on grassy land. No. 89. Ha Son Binh, Hoa Binh, 8 km to Da Bac (war monument). 31.1.1986. - Lamping in the stream valley covered with original forest. Time: 18.00 (26 C°) - 20.00 (24 C°). No. 90. Ha Son Binh, Hoa Binh, city. 31.1.1986. - Singling from a lamp. No. 91. Ha Noi, city. 2.II.

1986. - Earthworms dug out from the soil around the city and in city gardens. Authors' addresses: Dr. S. MAHUNKA Zoological Department Hungarian Natural History Museum Baross u. 13 H-1088 Budapest Hungary and Dr. J. OLÁH Fisheries Research Institute H-5Í541 Szarvas Hungary