1865.] AXIAL SKELETON IN THE PRIMATES. 547 
Suborder I, AntnroproreEa*. 
AAT ool om EA MENTIONS, « cca sass easeoeseneavonstemedaoksocet eins okenssa'us Homo. 
Troglodytes. 
Simia. 
Hylobates. 
L. GStmtine .....000:000 
P Spyies Semnopithecus, 
II. Sump ..... atte Subfam.t Be ene {Cane 
Cercopithecus. 
acacus. 
Inuus. 
Cynocephalus. 
Atel 
teles. 
{Na Celaney aceevecnice Lagothrix. 
3. Cynopithecine ... 
2. Mycetine ......... Mycetes. 
HTT CREBUD A wieses se.neh es Subfam. . a Bais ee { ea 
rachyurus. 
Callithrix. 
\ 4. Nyctipithecine 4 Chrysothrix. 
Nyctipithecus. 
NV MELA DAN TD eRe LOS sennee sad soils ss peaees cee ca eee eae Hapale. 
Suborder II. Lemvurorea t. 
(1. Indrisine ......... Indris, &e. 
2. Lemurin® ......0.. Lemur, &e. 
pie Bychieghns, 
ubfam, . she p eta ia oris. 
4 3. Nycticebine ...... Perodictitan: 
Arctocebus. 
4, Galaginine ...... Galago. 
VI... TARSIIDR ........00c00e ienpnsiadshivd apastise chen seag igteseayves Tarsius. 
FUE OM RURG MBAR EE consh ho cus sshiuanuniddnoiidendpaden=adoses%ee Cheiromys. 
V. Lemurip# ......... 
Throughout the Primates the spinal column consists of the same 
regions as it does in Man, the most obvious difference being the 
very considerable increase of the coccygeal vertebrae, both as re- 
gards number and size, in the great majority of species. 
With the exception of this coccygeal or caudal region, the other 
parts of the spine bear more or less the same proportions one to 
another as in Man. 
CreryicaLt VERTEBR&. 
The length of the cervical region, as compared to that of the dorsal 
region, is throughout the Anthropoidea pretty uniform, the first 
being from rather more than a third to about half the length of the 
second. In the Lemuroidea we find a greater variation, the propor- 
tion of the cervical region to the dorsal ranging from considerably 
less than a third, e. g. Loris, to as much as two-thirds, as in Indris. 
The proportion of length to breadth of the cervical region is gene- 
rally as about two to one in the Anthropoidea; but in Hylobates it 
* See P. Z. S. 1864, p. 635. 
+ This subdivision was, I believe, first proposed by my late lamented friend, 
Mr. Martin, in his unfinished work on Mammals, entitled ‘A Natural History 
of Man and Monkeys,’ p. 361. I am doubtful whether the Simiine should not 
be raised to the rank of a family. 
{ For complete list of the genera of this suborder, see P. Z. S. 1864, p. 637. 
