Nachdruck verboten. 
The Sterno- and Brachio-Cephalic Muscles and their Nerve- 
Supply, with special Reference to the Ungulata. 
By T. Wiscate Topp, M.B., F.R.C.S. 
Lecturer in Anatomy, University of Manchester, 
and 
C. G. Topp, Tom Jones Scholar, 
Prosector in the Department of Anatomy, University of Manchester. 
With 2 Figures. 
Our attention has been drawn to the subjeet in hand by the 
occurrence of a lesion in the nerve-supply to the brachio-cephalicus 
in a giraffe. 
The animal was put under our care for treatment and its case 
is published elsewhere (9). The condition was somewhat difficult to 
understand at first and we therefore decided to investigate as far as 
possible the neuro-muscular arrangements of this region in the ungu- 
lata. In this research Messrs. JENNISON of Belle Vue Zoological 
Gardens have greatly assisted us. It is owing to their kindness that 
we have procured the animals on which to make our dissections. 
Our object has been to discover any peculiarities in the nerve- 
supply of these muscles which would account for varying conditions 
of lameness and ataxia among the ungulata noticed recently by us in 
our veterinary studies. The muscles to which our attention has been 
directed are the sterno-cephalicus and the brachio-cephalicus. 
The former arises from the highest segment of the sternum and hasa 
variable insertion. It may be attached to the mastoid, paramastoid, 
or paroccipital process, to the angle of the jaw or to the fascia over- 
lying the masseter. It therefore has received a variety of names, 
such as the sterno-occipitalis, sterno-maxillaris and sterno-masse- 
tericus. 
