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Journal of the Speleological Society of Japan

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Volume 8

Shun-Ichi UENO
Occurrence of a Microphthalmic Trechiama (Coleoptera, Trechinae) on the Island of Shodo-shima in West Japan
  A new microphthalmic species of the trechine genus Trechiama is described from the upper hypogean zone of the Island of Shodo-shima lying on the Inland Sea of Seto-naikai in West Japan. It does not belong to the group of T. oni, between whose separated distributional ranges lies Shodo-shima, but is closely allied to T. yokoyamai S. UENO, which is distributed over the central part of the Chugoku District in western Honshu. It is described under the name of T. advena.
Shun-Ichi UENO
New Anophthalmic Trechiama (Coleoptera, Trechinae) from the Upper Hypogean Zone of Northeast Japan
 Three new species of anophthalmic trechine beetles are described from the upper hypogean zone of northeastern Honshu, Northeast Japan. All of them belong to the group of Trechiama habei and fill in the blank, both taxonomic and zoogeographic, between the echigonis complex and the cordicollis complex. The new names given are T. accipitris, T. masatakai and T. umbraticus.
Shun-Ichi UENO
An Addition to the Genus Oroblemus (Coleoptera, Trechinae)
  A new upper hypogean species of the trechine genus Oroblemus is describcd from Kozuchi-yama near the northwestem edge of the Hinotodake Hills in northeastern Honshu, Northeast Japan. It is closely re]ated to O. subsulcipes S. UENO, and is named O. dilaticollis.
Masaharu KAWAKATSU and Philip CHAPMAN
Mitchellia sarawakana gen. et sp. nov. (Turbellaria, Tricladida, Maricola), a New Freshwater Planaria from Water Polo Cave, Sarawak, East Malaysia
 A new species of the new genus Mitchellia (Turbellaria, Tricladida, Maricola) from Water Polo Cave, the Gunung Mulu National Park, Sarawak, East Malaysia, is described : Mitchellia sarawakana KAWAKATSU et CHAPMAN, gen. et sp. nov. This troglobitic, white and eyeless species seems to be a marine relict. It has been placed tentatively in the Maricola family Procerodidae DIESING, 1862 (HOLMQUIST and KARLING, 1972, emend.).
Naruhiko KASHIMA, Moo Song SUH and Hong Youl HAHN
Speleo-Minerals in Karst Area, the Seogbyeong-san South Korea
  An examination in four caves of the Seogbyeong-san karst area has revealed the presence of carbonate (calcite, aragonite and hydromagnesite) and phosphate (hydroxyapatite) speleo-minerals. Seodae-gul Cave is well mineralized by calcium-magnesium carbonate mineral assemblage. Hydromagnesite in particular occurs as small rosette-shaped clusters on aragonite speleothems. The rosette consists of many thin bladed tabular, parallel and shiftable hydromagnesite rhombs and rectangles. Hydromagnesite moonmilk has recently been discovered in five caves (Seogha-gul Cave, Hoanseon-gul Cave, Geumgang-gul Cave, Hoaam-gul Cave and Seodae-gul Cave) of South Korea. On the basis of the occurrence of hydromagnesite, the writers attempted to ratify the acceptable genesis of hydromagnesite moonmilk.
Nobuhide SAWAMURA and Hitoshi MOMOI
Cave Minerals and the Guano from Kyusen-do Cave in Kumamoto Prefecture, Japan
 The environment of mineral formation related to bat guano was investigated in Kyusen-do Cave of Kumamoto Prefecture, Southwest Japan. In the so-called "Guano Passage" of the cave, guano minerals are now in the course of formation, while in "Bat Passage," such formation has already terminated. The guano minerals found are brushite, gypsum, hydroxyapatite, quartz, taranakite and variscite. The process of mineral formation based upon the mode of occurreoce and the chemical composition of the guanos have been inferred as follows : The brushite- and quartz-bearing guanos deposit first on limestone; then a part of limestone in contact with the guano changes into hydroxyapatite. Gypsum and taranakite are found commonly in the middle part of thick heaps of guanos. After SiO2, Al3+, Fe3+ and P043- gradually concentrate at the lower part of the thick heaps, SiO2 deposits as quartz on hydroxyapatite, and the others may form variscite.