F. C. Bisiiopp and H. P. Wood 
159 
The Adult (PI. X, figs. 1-4): A few tests of adult longevity have 
been made. The ticks used were individuals collected on hosts in 
nature. One female, about engorged, liveil 117 days. Another 
female in a lot containing several specimens lived 111 days. At the 
end of this time she attached herself to a guinea-pig but was later 
shaken off and killed. 
One female only has been engorged experimentally. This was one 
of two females which were collected on September 2, 1911, on a 
mountain goat. They were about engorged and may have been 
fertilised. They could not be induced to feed on an angora goat, but 
quickly attached themselves to the ear of a guinea-pig when applied on 
September 21. One of the ticks was shaken off but reattached itself, 
only to be dislodged again. This time it received an injury which 
caused its death. The remaining tick showed considerable increase in 
size on September 25, and on the 27th it was over ^ engorged. On the 
morning of September 28 it appeared fully engorged. It dropped off 
that evening at 6 o’clock, being well engorged (measuring 112 x 6’3 x 
4-7 mm., the length including the capitulum in normal position). The 
body was dark bluish-gray in colour. This tick remained active until 
about October 21 when it died. On October 5 and the following live 
days it was seen to protrude the vesica biloba as though about to 
oviposit, but no eggs were deposited. 
The largest female which we have seen was collected on a mountain 
sheep. It measured 129 x 7 5 x 42 mm. (length including capitulum). 
The predominance of males, especially in the summer months, 
indicates that they remain on the host for some time after the females 
drop off 
Economic Importance. 
This tick has not been collected on domestic animals and it is of no 
known economic importance. The infested mountain sheep examined 
were apparently healthy and the one which bore the greatest number of 
ticks (probably 35 specimens) was in fine condition. 
