ADDENDA.
The following addenda are due mainly to an expedition to the lakes of Kumaon in the W. Himalayas undertaken by Mr. S. W. Kemp in May, 1911.
PART I.
Genus SPONGILLA.
Subgenus EUSPONGILLA (p. [69]).
1 a. Spongilla lacustris, subsp. reticulata (p. [71]).
Specimens were taken in the lake Malwa Tal (alt. 3600 feet) in Kumaon, while others have recently been obtained from the Kalichedu irrigation-tank in the Pagnor talug of the Nellore district, Madras (G. H. Tipper).
4. Spongilla cinerea (p. [79]).
Specimens were taken in Naukuchia Tal (alt. 4200 feet) in Kumaon. They have a pale yellow colour when dry. This sponge has not hitherto been found outside the Bombay Presidency.