The Geographical Races of Galago crassicaudatus. 47 
structure of the auditory bulla from all the other Felide of 
America. These cats have been affiliated with the Old- 
World forms F. ocreata and sylvestris, but their affinities 
appear to me to be clearly with their compatriots probably 
of the F. geoffroyt group. 
To sum up: the American Felid, large, small, and 
medium-sized, may be relegated to the following groups :— 
1. Group exemplified by F. pardalis and F. wiedii. 
2. Group exemplified by #. guigna, F. pardinoides, F° sali- 
narum, I, geoffroyi, Ff. tigrina, and F, jaguarondt. 
Group exemplified by F’. colocolo and F. pajeros. 
Group exemplified by /. canadensis and PF. ruffus. 
Group exemplified by &. concolor. 
Group exemplified by Panthera onca. 
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IlIl.—The Geographical Races of Galago crassicaudatus. 
By OLDFIELD ‘THOMAS. 
(Published by permission of the Trustees of the British Museum.) 
In his ‘ Primates’ Dr. D. G. Elliot has recognized a number 
of species of the Galago crassicaudatus group, these species 
being arranged practically without regard to their geographical 
relationships ; 3; and an examination ‘of our specimens would 
seem to show that some revision of the group is necessary. 
In the first place, a study of the skulls indicates that the 
East-African forms—hindet *, panganiensis, lastotis, badius, 
kikuyuensis, and agisymbanus,—which Dr. Elliot has either 
sandwiched between or united with the forms from Nyasa 
and southwards, are really distinguishable from all the latter 
by their smaller skulls. 
There is a good deal of variation in East Africa as regards 
skull-size, and there are probably several valid races there, 
but these I have not at present material to deal with. 
On the other hand, the more southern skulls—Rhodesia to 
Zululand—are really very uniform in size and proportions, 
when the changes and variations due to age and sex are 
properly allowed for. The frequent references in Elliot to 
the proportions of the muzzle are really based on characters 
due to sex, the large broad-rooted canines of the male 
* References to all the published names mentioned in the present 
paper are given in Elliot’s ‘ Primates,’ i. pp. 54-63, and are not now 
repeated. 
