— 7 3 — 
Leptoderia albofusca. A few haemogregarines of two âges 
were seen, a small round form and a larger crescentic form. The 
snake was taken alive and placed in a large glass jar, when it 
was noticed that a tiek resembling Amblyomma was attached 
to the skin* of the baek. The following morning the tick was miss- 
ing and it is believed must hâve been eaten oy the snake as it 
c'ould not hâve escaped from the jar. This suggests the possibi- 
lity. of a mode of infection analogous to that of Hepatosoon per- 
niciosum, Miller. 
V. — Haemogregarine of Bufo marinus. 
s This haemogregarine was found in varying numbers in Bufo 
marinus, the large comrnon toad of this région. Eight specimens 
were examined in March, 1909, and five contained haemogrega¬ 
rines as well as unsheathed filaria embryos. The parasites were 
numerous and were of different sizes, though the larger forms 
were more commonly seen. The nucléus of the red cell is disloea- 
tecl in the larger forms, but the cell is not dehaemoglobinized. A 
few refractile granules are seen in each end of the larger forms. 
The larger forms are enclosed within a refractile capsule or 
sheath. A number of large free forms were seen in those toads 
whose blood showed a heavv infection with large forms. No dou- 
bly infectecl cells were seen. 
These toads were infested with ticks, Amblyomma varium, ma¬ 
les and distended females. In sections of the ticks the females con- 
tain myriads of sheathed filaria, considerablv larger than em¬ 
bryos found in the peripheral blood of the toads and stronglv 
indicating that A. varium acts as an intermediary host for the 
filaria of Bufo. In neither males nor females was there any posi¬ 
tive indications of the sporogony of the haemogregarines. 
I wish to thank the following gentlemen for various identi¬ 
fications: Mr. N. Banks, Mr. W. D. Hunter, I rof. V. L. Kel¬ 
logg, Mr. A. H. Jennings and Dr. Thos. Barbour. 
