1865.| MR. MIVART ON THE MYOLOGY OF CERCOPITHECUS. 43 
trigonal, rather longer than wide; front part broad, arched out in 
front, broadly truncated at the sides ; the hinder part at first suddenly 
tapering, for half its length, and then gradually tapering to a point 
behind. 
The body of the cervical vertebra of #. robustus from Babbacombe 
is very thick, and of a nearly uniform thickness ; front and hinder sur- 
faces nearly flat; the sides are nearly straight, the lower one being 
the widest and most arched out. The upper and lower lateral pro- 
cesses are strong; the upper one subtrigonal, slightly bent down, 
and nearly on a level with the articulating surfaces of the body ; the 
hinder one rather compressed above, broader and somewhat flattened 
on the lower edge. The width of the body 73, the height 6 inches. 
The upper processes 32, and the lower 43 inches long ; but they are 
evidently broken and sea-worn at the end. 
This vertebra appears to be either the fourth or fifth cervical, as 
the lateral processes are nearly on the same plane as the articulating 
surface; while in the anterior or posterior cervicals they are usually 
either bent forwards or backwards. It differs from other cervical 
vertebree in the squareness of its form, the straightness of the sides, 
the smallness of the size, and the very great and equal thickness of 
the body. It is evidently the bone of an adult animal, as the epi- 
physes are completely united to the body of the vertebra. 
The body of the vertebra is nearly as wide and thick as that of 
the corresponding one in M. longimana (width of body 9, height 7, 
width of neural arch 5? inches in widest part), at the same time 
that the space between the bases of the neural arch is nearly 14 inch 
wider, and the lateral processes are very much thicker and more 
developed, than in the vertebra of M. longimana. 
It differs in the same characters, but in a greater degree, from 
the correspondiug cervical vertebra of Physalus (width of body 11, 
height 7, width of neural arch 53 inches) ; for in that genus the body 
of the vertebra is thin and transversely more oblong, and the canal 
of the neural arch not so broad, compared with the width of the 
body of the vertebra. 
3. NoTEs ON THE Myo.woGy or A SPECIMEN OF CERCOPITHECUS 
saBzuS. By Sr. GrorcGe Mivart, F.Z.S., F.L.S. 
In October last I received from the Society’s collection a fine 
adult female Monkey of the above-mentioned species. It may per- 
haps be worth while to record the conditions presented by some of 
those muscles which show such interesting variations in the order 
Primates. 
The levator claviculz arose from the transverse process of the 
atlas only, and, descending beneath the sterno-mastoid, was inserted 
into the acromion and the anterior third of the spine of the scapula, 
but not at all into the clavicle. The trapezius was entirely super- 
ficial to it. 
The omo-hyoid was wanting. 
