LEMURIDZ 691 
Angola is G. montieri. G. garnetti, alleni, maholi, demidofi, and 
senegalensis are other recognised species. The last-mentioned was 
the first known to science, having been brought from Senegal by 
Adanson, and described in 1796 by Geoffroy, who adopted the 
name Galago, by which it was said to be called by the natives. 
Subfamily Lorisinze.—Dental formula as in Lemurine. Index 
finger very short, sometimes rudimentary and nailless. Fore and 
hind limbs nearly equal in length. Tarsus not specially elongated. 
Pollex and hallux diverging widely from the other digits, the hallux 
especially being habitually directed backwards. Tail short or quite 
rudimentary. Mammez two, pectoral. 
A small group of very peculiar animals, of essentially nocturnal 
habits, and remarkable for the slowness of their movements. They 
are completely arboreal, their limbs being formed only for climbing 
and clinging to branches, not for jumping or running. They have 
rounded heads, very large eyes, short ears, and thick, short, soft 
fur. They feed not only on vegetable substances, but, like many 
of the Lemuride, on insects, eggs, and also birds, which they steal 
upon while roosting at night. None of the species are found in 
Madagascar. One of the greatest anatomical peculiarities of these 
animals is the breaking up of the large arterial trunks of the limbs 
into numerous small parallel branches, constituting a rete mirabile, 
which is found also in the Sloths, with which the Loris are some- 
times confounded on account of the slowness of their movements. 
The animals of this group are usually divided into four genera, 
though the characters by which they are separated are very trivial. 
There are more properly two natural divisions. 
A. Characterised by the index finger being small, but having 
the complete number of phalanges, and by their Asiatic habitat. 
These form the genus Loris of Geoffroy St. Hilaire (1796), 
Stenops of Illiger (1811), but they were in 1812 divided by Geoffroy 
into two genera, Mycticebus and Loris, a division which has been 
accepted by most modern zoologists. 
Nycticebus..First upper incisor larger than the second, which 
is often early deciduous. Inner margins of the orbits separated 
from each other by a narrow flat space. Nasal and premaxillary 
bones projecting but very slightly in front of the maxilla. Body 
and limbs stout. No external tail. Vertebre: C7,D17,L 6,58 3, 
C12. The species are WV. tardigradus, the common Slow Lemur or 
Loris, of the Malay Countries, Sumatra, and Borneo; NV. javanicus, 
of Java; and WN. cinereus (Fig. 329) of Siam and Cochin China. The 
habits of all are much alike. They lead a solitary life in the 
recesses of large forests, chiefly in mountainous districts, where they 
sleep during the day in holes or fissures of large trees, rolled up 
into a ball, with the head between the hind legs. On the approach 
1 Geoffroy, Ann. du Muséum, vol. xix. pp. 162, 163 (1812). 
