16,1 Haughwout and Youngberg: Trypanosomiasis 79 
Several blood smears were made at the time of the autopsy and 
the slides were later forwarded to Manila where they were 
stained with Wright’s solution and examined. Numerous tryp- 
anosomes, much larger and of a different type than Trypano- 
soma evansi were found. In many ways, the trypanosome 
resembles Trypanosoma theileri, but from the preparations at 
hand we are not prepared to place it definitely in that species. 
As might be expected, the material was not particularly suited 
to a careful cytological study and we were able to find on the 
slides relatively few trypanosomes that did not show signs of 
plasmolysis or the untoward effects of delayed fixation and stain- 
ing characteristic of material collected in the Tropics. Other 
trypanosomes failed to take the stain properly and attempts to 
restain them only made a bad matter worse. We were, how- 
ever, able to find one hundred individuals in a fair state of 
preservation, some of which are shown in Plates 1 and 2. As 
will be seen on inspection of fig. 2, the trypanosome is quite 
polymorphic, its length ranging from 22 » to 45 4. These meas- 
urements are of the body only, the free flagellum being unstained 
in all but a few individuals. In those individuals in which the 
entire free flagellum could be distinguished, it showed a length 
of from 15 » to 26 ». The proportion it bore to the size of the 
body in individual instances can be seen in Table 1. 
TABLE 1.—Measurements of Trypanosomes, including free flagella. 
“pety. |’ “fageltum.”| Total lensth. | ach” 
“a ua x & 
36.0 21.0 57.0 3.0 
88.0 19.0 57.0 3.0 
34.0 15.0 49.0 2.5 
37.5 20.0 57.5 3.0 
33.5 21.0 54.5 2.5 
87.5 19.0 56.5 2.5 
32.0 19.0 51.0 3.0 
35.5 18.0 53.5 2.5 
33.5 26.0 59.6 2.5 
23.5 21.0 44.5 2.5 
29.5 20.0 49.5 2.5 
32.5 20.0 62.5 3.0 
80.5 19.0 49.6 3.0 
85.5 19.0 54.5 4.5 
22.0 12.0 34.0 2.0 
33.5 13.0 46.5 2.0 
28.0 14.0 42.0 2.0 
30.0 14.0 44.0 2.5 
37.0 16.0 53.0 2.5 
38.5 15.0 53.5 2.5 
