334 
Cytamoeba. 
Cytamoebae were present in a few of the frogs in considerable 
numbers. Amongst the forms seen was the round form (Plate XXIX, 
figs. 104, 106, 108, 110) previously described in the snake (page 304) 
(2'2/z wide). In it were short rods, or sometimes round, red dots 
(Plate XXTX, fig. 104). Other forms were oval or finely granular, 
sometimes with no apparent internal structure (Plate XXIX, fig. 103). 
The round forms were often found near the nucleus, and sometimes 
apparently emerging from it, giving the appearance of fragmentation 
of the nucleus (Plate XXIX, fig. 110). Some of the parasites were 
filled with slender rods, which at times projected beyond their edge 
for a distance of 4^ (Plate XXIX, figs. 1 12, 113). Other forms were 
present which looked like masses of rods bound together (Plate XXIX, 
figs. 107, 108, 109, 115); sometimes these bundles of rods were free 
in the serum (Plate XXIX, fig. roo). Occasionally short rods were 
found free in the erythrocytes, sometimes end to end, sometimes 
crossing one another at right angles. The rods found in all the above 
forms were of two kinds, a short rod with rounded ends, and a long 
filamentous rod. Some of the short rods were seen free in the 1 
blood plasma in such forms and arrangements that there seems to be 
no doubt that some of them at least are bacteria. It is equally 
certain that some of the longer slender rods are merely filamentous 
cytoplasmic processes of the rounded parasite. In some of the 
specimens the body of the cell was stained a light blue, while the 
rods within were stained a bright red. 
LITERATURE 
*• Kruse - Ueb e f Rlutparasiten. Virchow’s Archives. Jan. 2, 1S90, Yol. uo. 
P- 54 ». 
2. Gabritchewsky. Contribution a l’etude de la parasitologie du sang. Annales 
Inst. Pasteur, 1890, T. IV, p. 480. 
3- I.abbk. Recherches zoologiques et biologiques sur les parasites endoglobulaires 
du sang des vertebres. Archives de Zoologie experimentale et generate. 
3 Series, T. 2, 1894, p. 5S . 
4- Wasielewski. Sporozoenkunde. Jena, 1896, p. 88. 
5 - Ziemann. Uber Malaria und andere Blutparasiten. Jena, 1798, p. i44- 
6 - Laveran. Sur le bacille parasite des heinaties de Rana esculenta. Memoir de la 
Societe de Biologie, 1899, p. 355. This has a goocl review of the lite rature. 
