8 
BULLETIN OF THE BUREAU OF FISHERIES 
sharply defined than in S. salmonis, and the general appearance of this species 
suggests that it is a typical ameboid form of the limax type. The cyst shown in 
Figure 40 is mononuclear and very similar in appearance to the ameboid stage. 
This species has been found in only a few instances, and then in too small 
numbers to permit of a detailed study, but such observations as have been made 
indicate that it differs in no essential respect from the orthodox type of parasitic 
amebse. 
BIBLIOGRAPHY 
Calkins, Gary N. 
1913. Genera and species of amoeba. Transactions, Fifteenth International Congress on 
Hygiene and Demography, September 23-28, 1912, Vol. II (1913), pp. 287-305. 
Washington. 
Dobell, C. Clifford. 
1909. Researches on the intestinal protozoa of frogs and toads. Quarterly Journal of 
Microscopical Science, Vol. 53, new series (1909), pp. 201-277, plates 2-5. London. 
1914. Cytological studies on three species of Amoeba — A. lacertx Hartmann, A. glebse n. sp., 
A. fluvialis n. sp. Archiv fur Protistenkunde, Band 34 (1914), pp. 139-189, plates 
7-11. Jena. 
Ford, E. 
1914. On the nuclear division of a free-living limax amoeba ( Amoeba tachypodia Glaser?). 
Archiv fur Protistenkunde, Band 34 (1914), pp. 190-197, pi. 12. Jena. 
Glaser, Hans. 
1912. Untersuchungen iiber die Teilung einiger Amoben, zugleich ein Beitrag zur Phylogenie 
des Centrosoms. Archiv fur Protistenkunde, Band 25 (1912), pp. 27-152, 5 text 
figs., pis. 3-8. Jena. 
Taylor, Monica. 
1923. Nuclear divisions in Amoeba proteus. Quarterly Journal of Microscopical Science, 
Vol. 67, new series (1923), pp. 39-46, pi. 12. Oxford University Press, London. 
Wilson, Charlie Woodruff. 
1916. On the life-history of a soil amoeba. University of California Publications in Zoology, 
Vol. 16, No. 16, August 9, 1916, pp. 241-292, pis. 18-23. Berkeley. 
