The Remarkable Draparnaldia Species of Lake Baikal, Siberia

At publication (Forest, 1956a), examination had not been possible for specimens of the group of Draparnaldia species which are endemic to Lake Baikal. Then, a tentative appraisal had to be made from descriptions and illustrations by their author, Constantine Meyer (1922) (1924) (1926). Now specimens of all nine species have been examined, and a careful translation completed of their descriptions as given by Meyer (1930).