西沙群岛海洋硅藻的研究──Ⅲ.胸隔藻属Mastogloia Thwaites 1新种及其他属种在我国的新记录

MARINE DIATOMS OF XISHA ISLANDS,SOUTH CHINA SEA─ Ⅲ.ONE NEW SPECIES OF MASTOGLOIA AND FIVE NEW SPECIES RECORDS OF OTHER GENERA

在西沙群岛潮间带底栖硅藻的研究中发现了1个新种──三波胸隔藻Mastogloiatriundulatasp.nov.和5个新记录：楔形胸隔藻Mastogloiacuneata（Meister）Simonsen，红胸隔藻椭圆变种Mastogloiaerythraeavar．ellipticaVoigt,，红胸隔藻格鲁变种MastogloiaerythraeaVar．grunowiiFoged,缢缩棒杆藻小形变种Rhopalodiaconstrictavar.minorKrammer和具盖棒杆藻伸长变种Rhopalodiaoperculatavar.productaGrunow.

Samples were collected from the intertidal zone of the Xisha Islands,Hainan Province. Taxonomic innovations comprised of one new species, Mastogloiatriundulata sp. nov. and five new records for China.Mastogloia triundulata Liu sp. nov. (plate I;3)Valvae navicula, 64μm longa, lopm lata, 6.4 plo longiora guam lahor. Rapherecta, inter leviter costas longitUdinales itnmergit punchs longitudinales and punctistransversalibus near perpendicularis each, 25/28 in 10μm. Prtctal ring undulata, 16-18 in 10μm, about 2μm lata in wavedpeak and about lpm in waved valley.Types:SX 820305-6(4), Facultas Biologica Universitahs Amoiensis.