Mark E.L.

MARK, E. L. — 1898 Report on the dredging operations off the west coast of central america to the galapagos, to the west coast of Mexico, and in the gulf of california, in charge og Alexander Agassiz. . . (Bull. Mus. Comp. Zool. Harvard College, XXXII, Nº 8, Aug. 1898, pp. 147-154, pl. 1-3). Cambridge, Mass., 1898.