xiv,2 Haughwout and de Leon: Erythrocyte Ingestion ot 
Mallory’s connective-tissue stain, would probably yield better 
results. Indeed, we are inclined to believe, from the exceedingly 
coordinated nature of: the process of deglutition and the accom- 
panying phenomena, that the animal may be found to possess a 
well-developed neuromotor apparatus, such as has been described 
by Sharp(12) and Boeck(2) in the case of certain ciliated and 
flagellated endoparasitic protozoa. 
A fairly complete picture of the organism was secured from a 
study of the individual shown in fig. 2. The structures did not 
all stand out with the sharpness shown in the figure, but we 
are quite convinced of the presence of the parabasal body and 
the undulating membrane, neither of which could be seen with 
any distinctness in the individual shown in fig. 1. A puzzling 
feature shown in fig. 2 is the row of chromatinic granules of 
graduated size, that appear to lie free in the cytoplasm between 
the parabasal and the axostyle. These were rather deeply 
staining, and we believed at first inspection that they marked 
the line of the axostyle and represented the axostylar chroma- 
tinic granules seen so frequently in the trichomonads. But later, 
we discovered the axostyle lying in the position shown in the 
figure and convinced ourselves of its identity. Therefore, the 
question arises as to the nature of these large, prominent gran- 
ules; for their extreme regularity in position and their size 
gradation belie the supposition that they are erythrocytes in 
various stages of digestion. 
Ordinarily, the axostyle and the “axostylar chromidia” are 
demonstrated with some difficulty, after careful staining and 
extraction and under exceptionally good illumination. The 
 axostyle in both stained individuals figured was quite clear and 
distinct; the granules shown in fig. 2 took the stain as intensely 
as the nucleus. The conformation in which they lay suggested 
an axostylar relation, and if the granules seen in the axostyles 
of other trichomonads are intra-axostylar, as many workers 
believe, the questions arise as to whether the granules shown 
in our preparation are identical with the axostylar granules of 
other species and, if they are, what they are doing free in the 
cytoplasm. The axostyle itself was perfectly clear throughout 
its length. Its posterior extremity had been drawn into the 
cytoplasm, and throughout its entire length it showed no trace 
of the presence of “axostylar chromidia.” In fig. 2 it will be 
seen that the axostyle is apparently carried anteriorly to the 
point where its anterior extremity seems to underlie the nucleus. 
The nucleus was of the karyosome type with a fairly large karyo- 
some, and more or less abundant peripheral chromatin lying 
164001——4 
