240 
H. M. WOODCOCK. 
(BaiTOuxia alpina), showing two or more karyosoines in connection 
with the nucleus. 
Figs. 4-6, 8. —Female gametocytes of Leucocy tozoon ziemanni. 
(The parasite of fig. 4 is slightly flattened out.) c. General cytoplasm 
of parasite, containing its nucleus, and the associated karyosonie. li.c. 
Cytoplasm of host-cell (leucocyte), prolonged into two tails or horns. 
n. Nucleus of host cell, elongated and dumb-bell shaped. 
Figs. 7, 9 and 10. — Male gametocytes of L. ziemanni. Fig. 7 shows 
the general appearance of the nucleus, figs. 9 and 10 a much less 
common appearance. (The parasite of fig. 7 is slightly flattened out.) 
Lettering as in fig. 4. 
Figs. 11-17. — Female gametocytes of L. ziemanni, showing details 
of niiclear structiu’e. (To save space, in many cases only the middle 
portion of the parasite and of the elongated host-cell nucleus are 
shown.) 
Figs. 18-23. —Male individuals of L. ziemanni, to show the details 
of nuclear structure. (In some of these figures also the spindle-like 
prolongations of the host-cell are omitted.) 
Figs. 24-26. — Small, intermediate-sized and fairly large female indi- 
viduals of Halteridium noctuse, to show the mtclear condition as 
generally seen. 
Fig. 27. — Lai’ge female form of H. fringillse; similar nuclear 
condition. (Note the much smaller size of both blood-corpuscle and 
parasite in this case.) 
Figs. 28 and 29. — Large and fairly large male gametocytes of H. 
fringillse, to show the nuclear condition. 
Figs. 30 and 31. — Ditto of H. noctuse. 
Fig. 32. — Large adult female individual of H. fringillse, to show 
the extra-nuclear karyosonie corresponding to the usual condition seen 
in L. ziemanni. 
Figs. 33-35. — Large or fairly large female forms of H. noctuse 
showing a similar or almost similar nuclear condition. 
