ON the basis of reports from the seismographic stations at Georgetown, Fordham, Huancayo and San Juan, the U.S. Coast and Geodetic Survey in co-operation with Science Service and the Jesuit Seismological Association has determined the epicentre of the earthquake of February 9, 1939, at 15h. 30-5m. G.C.T. to be provisionally latitude 11-5° N., longitude 88° W. This epicentre is in the Pacific Ocean to the west-south-west of Managua, the capital of Nicaragua, which was almost completely destroyed in the earthquake of March 31, 1931. The epicentre nearest to the present one in recent years was on February 15, 1926, when the epicentre was 11-7° N., 89-6° W. No damage has been reported in the present instance. Following recent shocks, the town of Cumbaya, near Quito, was strongly shaken during the night of March 2, by an earthquake which cracked many buildings, and caused apprehension amongst the inhabitants. No casualties are reported. It was on February 7, 1797, that Quito was destroyed by earthquake with the loss of 40,000 lives. OnOctober 2, 1933, another part of Ecuador, namely, the Santa Elena Peninsula, was strongly shaken by an earthquake. Weak local shocks often occur in the area.