Amphorotia nov. gen., a new genus in the family Eunotiaceae (Bacillariophyceae), based on Eunotia clevei Grunow in Cleve and Grunow 1880. 2006. (Diatom Monographs,6). 21 photographic plates ( SEM & LM). 153 p. gr8vo. Hardcover. (ISBN-10: 3-906166-29-5; ISBN-13: 978-3-906166-29-2)

Abstract: The new genus AMPHOROTIA is described based on EUNOTIAclevei Grunow in Cleve et Grunow 1880. The genus is defined by a complexof morpholog. characters, notably the amphoroid shape of the frustule,details of the siliceous structure of the valve and girdle, andsize and orientation of the raphe and rimoportulae. The genus belongsin the family Eunotiaceae and its relationships with other membersare discussed. Fourteen species are described, of which 6 are newto science. Of these 14, AMPHOROTIA clevei is a cold water borealspecies, 5 are endemic to lake Baikal, Siberia, 1 is endemic in LakeHövsgöl, Mongolia, 4 appear to occur only in South East China - oftenassociated with marine to brackish water, and 3 are believed to beextinct, known only from Miocene fossil specimens, of which onedeposit is marine. In addition, 5 other species are included in thegenus based on published information. The geographic distribution ofthe species is also discussed, particularly with reference to the twopatterns shown by these species, one extending across the Northernboreal, the other into more tropical regions via Southern China.