A preliminary communication on the life history of Trypanosoma balbianii

Abstract
Trypanosoma balbianii , Certes, is a primitive member of the family of the Trypanosomidæ, and occurs in great numbers as a parasite in the gut of the oyster, where it may be present, either swimming freely in the fluid contents or enclosed within the crystalline style, when this structure is present. The species has been worked at by Certes and Lustrae, the latter of whom describes the presence of an undulating membrane and the external features of the process of division. The nucleus is, however, described by neither author. The material used in prosecuting this research was obtained from oysters fished from the Adriatic Sea, off the coast of Rovigno, but the parasite also occurs in the oysters of Schleswig-Holstein and the north coast of France. This distribution is thus a wide one. The research has been carried out under the guidance of Dr. von Prowazek, my great indebtedness to whom I here take the opportunity of expressing.
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