165 
patches in front of the eye, and with three rounded umber 
spots at the sides and centre of the anterior border; two 
Colpocephalum marginatum, 
light brown lines extend, one on each side, from the lateral 
notch to the base of the occiput ; prothorax subrhomboidal, 
with a transverse line from angle to angle; mesothorax very 
short, metathorax not so wide as head; abdomen elliptical, 
longer in proportion than that in C. Nyctarde, and not at all 
claviform, as in C. importunum, much paler in the centre 
than at the side, last segment of the abdomen fringed densely 
with short close hairs, in a continuous series along the pos- 
terior margin, lateral border of the abdomen exhibiting in- 
dentations between the somites; femora oval, tibiz clavate, 
second joint of the tarsus much longer than the first; the 
last joint of the hindmost leg a little longer than that of the 
middle, and that a little longer than the corresponding seg- 
ment of the anterior pair. It differs from C. vittatum in its 
more elliptic abdomen and its darker margins. 
3. Ixodes Phascolomyis. 
This specimen was obtained from the wombat (Phascolomys 
wombata). It measures ‘65 of an inch in length; its greatest 
breadth is ‘45 of an inch. In shape it is pyriform-oval, with 
an elongated depression on its posterior surface, with a 
central rugous elevation; ventral surface with a triangular 
depression ; limbs attached to a short oblique ridge, ‘15 of 
