THE United States Coast and Geodetic Survey, in co-operation with Science Service and the Jesuit Seismological Association, has determined the epicentres of two recent earthquakes. The first was on September 26, 1942, and took place at approximately 4h. 00 -3m. U. T. It had an epicentre near lat. 12.8° N., long. 87-5° W., which is in the region south of the Golfo de Fonseca in Nicaragua in Central America. The second occurred on October 21, 1942, at about 16h. 22m. 15s. U. T. and had an epicentre near lat. 33-1° N., long. 116-0° W., which is to the west-northwest of Imperial in Southern California.