PR sg NF 
St ileal 
Fes ee ee a ee mee Ste 
thn ots as being of a nature so prea as to i is 
§ 
] . i 
Prof. Owen on the Class Mammalia. _ 188 
terize the hind lobe of each hemisphere. The superficial gre 
matter of the cerebrum, through the number wr ee of th ne 
convolutions, attains its maximum of extent in 
eculiar mental powers are associated with thie higtion form 
of brain, and their consequences wonderfully illustrate the value 
of the detebral character; accordin ng to my estimate of which, I 
am led to regard the genus s Homo, as not merely a representative 
of a distinct order, but of a distinct Sci of the aoa SI et 
for which I propose the name of ‘A RCHENCEPHALA’t (fig. 6). 
With this preliminary definition of pri organic characters, 
Which appear to guide to a conception of the most natural pri- 
simple others pail subdivided. or complicated te accessory 
a ig 
encephala with simple optic lobes are ‘edentulous’ or without 
caleitied teeth, are > devoid of external ears scrotum, nipples, and 
“4 mn epicoracoid and episternum, as in Lizards; they are un- 
guiculate and pentadactyle, with a supplementary tarsal bone 
“ipporting a perforated spur in the male. The order so charac- 
neipally from the eommon presence of the ai in them, as cont trasted 
Un 
and pri 
reid. poet absence j in the Carnivora and a, The cla avicle is present 
ten and of the ak avieclata Roder va rith a lower vertebrate type, might 
and Man he inferred from the elavicle e, at least with as much reason, as with A 
dif m. As to the sha 
fn pen ore from th Qua ome 
Rodan’ of the size, form, and persistent aidualte of the tympanic bone, the 
te Pliny show their more whiasee oo est o the oviparous type; the 
the Quadrumana in ies etna of the petro-tym- 
esti ureahte i of the “3 evi, 
neh are he sm of the considerations chat have ee me to set a different 
es than M. Gervais doe 8, ty n the arguments adduced by Prof. Milne-Edwards in 
"ef the seg tag™ of t aap with the Paiediedincind in a highly 
Soup of the Soha clas 
* 
tea Not bein, ing able to appreciate, or conceive of me pen peat i tool 
Uraje Somena of a Chimpanzee and of a i bay 
sp fi bet 
- AO 8s ae other than a difference of degree, I cannot shut my a to the 
of that all-pervading similitude of strueture—every tooth, 
Ha homolo ni Lair gree ee determination of the cyto between 
for the nd Pithecus the anatomist’s difficulty. And, therefore, with e respect 
oy tad of t he “ Records of Creation,” (8vo, ee be 3 peta, ) Ti fo “ieee 
Ad classification, in regarding man as a legitimate subject of zoologic 
G70», to overrule, and éyxéqadog, brain. 
a 
