Vol. 17 No. 1 (1969-09 issued)
| On the Peculiar Actinian, Synandwakia hozawai (Uchida) (With 2 Text-figures and 1 Plate) | |
| UCHIDA, Tohru;UCHIDA, Hiro'omi | 1-5 |
| Studies on Gregarines from Japan : I. Cephaloidophora warekara n. sp. and Two Other Gregarines from Crustaceans (With 2 Text-figures and 2 Plates) | |
| HOSHIDE, Kazumi | 6-16 |
| An Ecological Survey of Soil Fauna in Hidaka-Mombetsu, Southern Hokkaido (With 18 Text-figures and 8 Tables) | |
| TAMURA, Hiroshi;NAKAMURA, Yoshio;YAMAUCHI, Katsusuke;FUJIKAWA, Tokuko | 17-57 |
| Descriptions and Records of Marine Harpacticoid Copepods from Hokkaido, II (With 11 Text-figures) | |
| ITÔ, Tatsunori | 58-77 |
| Preliminary Observations on the Life History of Two Polistine Wasps, Polistes Snelleni and P. biglumis in Sapporo, Northern Japan (With 9 Text-figures and 3 Tables) | |
| YAMANE, Sôichi | 78-105 |
| Relative abundance, phenology and flower preference of andrenid bees at Hakodateyama, Northern Japan (Hymenoptera, Apoidea) (With 8 Text-figures and 6 Tables) | |
| MATSUMURA, Takeshi;MUNAKATA, Meiyô | 106-126 |
| Behaviour and Daily Activities of the Japanese Pika, Ochotona hyperborea yesoensis (With 8 Text-figures and 1 Table) | |
| KAWAMICHI, Takeo | 127-151 |
| Note Préliminaire sur la Répartiton Géographique des Bourdons japonais, avec Descriptions et Remarques sur Quelques Formes Nouvelles ou peu Connues (Avec 9 figures en texte et 6 tableaux) | |
| SAKAGAMI, Shôichi F.;ISHIKAWA, Ryôsuke | 152-196 |
| The Function of the Thoracic Ganglion of the Crayfish, Procambarus clarki (With 8 Text-figures) | |
| AOKI, Kiyoshi | 197-207 |
| Single Unit Analysis of the Olfactory Tract of the Crucian Carp (With 10 Text-figures) | |
| SATO, Yoshiaki;SUZUKI, Noriyo | 208-223 |
| Visual and Geotactic Control of Compensatory Eyecup Movement in the Crayfish, Procambarus clarki (With 6 Text-figures) | |
| HISADA, Mituhiko;SUGAWARA, Kiyoshi;HIGUCHI, Takashiro | 224-239 |
| The Heterogeneity of Acid Phosphatases in Different Organs of the Rat (With 1 Text-figure) | |
| KITAMURA, Takako | 240-243 |
| Drosophila Survey of Hokkaido, XXVII. : On Drosophilid Flies from Seven Localities of the Hidaka District in Southern Hokkaido (With 3 Text-figures and 3 Tables) | |
| KANEKO, Akasi;TOKUMITSU, Takashi | 244-256 |
| A Preliminary Survey of the Chromosomes in Field Mice, Apodemus and Clethrionomys (With 5 Text-figures and 2 Tables) | |
| SHIMBA, Hachiro;ITOH, Masahiro;OBARA, Yoshitaka;KOHNO, Sei-ichi;KOBAYASHI, Tsuneaki | 257-262 |
| On the Chromosomes of the shrew, Sorex unguiculatus (With 2 Text-figures and 1 Table) | |
| SHIMBA, Hachiro;ITOH, Masahiro | 263-265 |
| A Preliminary Note on the Chromosomes and Enzymatic Patterns of Three Forms of Sticklebacks (With 2 Text-figures) | |
| MURAMOTO, Jun-ichi;IGARASHI, Kiyoshi | 266-270 |