304 
not injured ; neither was there any destruction of the cell cytoplasm 
Two drepanidia were often seen occupying one blood corpuscle, 
sometimes on either side of the nucleus, and sometimes at one end of 
the corpuscle, which was then double the usual length (Plate XXV 
fig- 5 2 )- Two forms of drepanidia were seen, one with a finely- 
granular, striated, blue-staining cytoplasm (Plate XXV, figs. 50, 55), 
and the other with a lighter-staining, more loosely-woven cytoplasm, 
which contained vacuoles, of irregular size and number, at both ends 
(Plate XXV, fig. 51). 1 hese latter forms were often much shorter 
and wider than the others. The drepanidia measured from 11 to I }n 
in length, and from 4*5 to 8 /i in width. Free forms of the usual type 
were seen ; multiplication forms did not occur. Folded, “two-shanked." 
intra-corpuscular parasites were not seen. 
A few of the curious bodies illustrated in Plate XXV, figs. 53,54 
and in Plate XXVI II, fi gs . 56-58, were seen in the blood of this snake 
They weie rods from 10 to 19// long and about 1/1 wide. They 
stained homogeneously red with Romanowsky; they were, however, 
a deeper red at the edges than in the middle. The ends of the rods 
were somewhat rounded, but never well-defined. In a free single rod 
there was a deep red dot near the centre (Plate XXV, fig. 53). Two 
lods were always found in a cell, and they were usually of about the 
same length, though occasionally one was longer than the other. The 
s weie sometimes placed parallel, sometimes crossed upon one 
another, and sometimes came together at one end. They usually 
occurred in cells which were lighter-stained and had a rounder, redder 
c eus. They' were sometimes, not always, found in cells containing 
repanidia. two cases free parasites were seen; in one case two 
ro s were found on a degenerated drepanidium ; in the other case, a 
single rod was found free. 
, • , am k° n > by a study of slides of blood from other snakes in 
t lese bodies occur more frequently, has shown that they 
P sent t e curled-up remains of the capsules vacated by drepanidia " 
An Unidentified Parasite. 
fonnrl rOUndec * P aras ite of the type seen in frogs (page 335) was 
found m the snake (Plate XXV. fig. 55). It Insured W in 
w'br* =>1 1 1 conta ' nec * short red rods arranged, like the spokes of a 
wheel, about a small central red mass. 
Private communication. 
