G. Merriman 
178 
only recently that 0. mouhata has been distinguished, with certainty, 
from 0. savignyi and therefore many of the older records are not to be 
relied on. The accompanying map only records those places (©) from 
which ticks have been received, or recorded, by trustworthy observers, 
the regions, denoted by the sign x, are those in which it is practically 
certain that 0. mouhata does occur. 
The appended list includes all the places from which 0. mouhata 
has been recorded. (It contains names of places which are not marked 
on the map because of their precise position being doubtful.) Wherever 
possible the list includes the names of the collectors, the date of the 
record and the authority by whom the specimens were identified. It 
comprises all the places mentioned by Nuttall and Warburton^ (1908), 
and includes additional data relating to specimens received during 
the last two years at the Quick Laboratory, and information obtained 
through our correspondents—Prof Dahl (Beilin Museum), Prof Boiivier 
(Paris Museum), Prof Newstead (Liverpool School of Tropical Medicine), 
Mr E. B. Haddon (Uganda), Mr L. E. Robinson (Watford), and Mr H. G. 
Simpson (Nairobi), to all of whom we are indebted for the informa¬ 
tion they have kindly supplied. I have moreover re-examined the 
specimens (determined as 0. savignyi var. caeca by Prof L. G. Neumann) 
which are in the British Museum. 
1 TicTis, Part I, pp. 52-54. The references to the literature will be found in this 
publication. 
