590 MR. ST. GEORGE MIVART ON THE ~ [June 27, 
tebree sixteen, lumbar vertebree seven or eight in number; spines of 
lumbar vertebre all backwards inclined*; no distinct lumbar ana- 
pophyses+; neurapophyses not perforated ; two articular surfaces 
onthe atlas for its union with the axis ; cervical spines short. 
Loris. 
Spines of third and fourth cervical vertebre very minute ; neck 
so short that the breadth of the cervical vertebrae equals two-thirds 
their total length ; spines of lumbar vertebree nearly vertical ; dis- 
tinct though short lumbar anapophyses+; articular surfaces for the 
junction of the atlas with the axis not continuous ; dorsal vertebree 
fourteen or fifteen, lumbar vertebree nine in number; cervical spines 
short. 
PERODICTICUS AND ARCTOCEBUS. 
Cervical spines very long, the last the longest; distinct cervical 
metapophyses ; neurapophyses of dorsal vertebrae directly perforated 
Seven trunk-vertebra: of Potto (Perodicticus), from the British Museum. Nat. size. 
by spinal nerves ; spines of lumbar vertebrz vertical or very slightly 
inclined forwards ; articular surfaces for the junction of the axis with 
the atlas continuous, as in Lemur; dorsal vertebree fourteen or fifteen, 
lumbar vertebrze seven or eight in number; sometimes traces of hy- 
perapophyses. 
GALAGININE f. 
Atlas with only one articular surface behind ; axis with a simple 
or bifurcated spinous process; spines of all the cervical vertebrz 
posterior to the axis almost or quite obsolete ; thirteen dorsal, and 
six lumbar vertebree ; twelfth or thirteenth dorsal spine turned for- 
wards; metapophyses and anapophyses distinct; hyperapophyses 
(fig. 8, 4) in lumbar region at their maximum ; first dorsal spine long. 
TARSID. 
Cervical spines almost obsolete ; first dorsal spine very small ; 
* Noticed by De Blainville, ‘ Ostéographie,’ Lemur, p. 14. 
t Noticed by De Blainville, ‘Ostéographie,’ Lemwr, p. 16. The metapophyses 
are described by Prof. Owen in part 1 of his Memoir on the Megatherium, 
‘Phil. Trans.’, part 2 for 1851, p. 728. 
{ Unfortunately I have only been able to observe two skeletons of this sub- 
family—one of Galago (Otolicnus) allenii, the other of Galago (Hemigalago) 
demidoffit. 
