874 THE SENSE ORGANS AND SKIN OF THE HORSE 
scutiform cartilage and passes backward to end on and below the most prominent 
part of the base of the concha (eminentia conch). 
(b) The scutulo-auricularis profundus minor lies between the base of the con- 
cha and the preceding muscle, and is best seen when the latter is cut and reflected. 
It is flat and about an inch in length. Tt arises from the posterior part of the deep 
face of the scutiform cartilage and from the cervico-scutularis, and passes down- 
ward, backward, and outward to be inserted into the base of the concha under 
cover of the preceding muscle. 
7. The tragicus (or mastoido-auricularis) is a very small muscle which arises 
from the temporal bone just behind the external acoustic process and from the an- 
Fre. 701.—Musc ies oF EXTERNAL Ear or Horse; Dorsar View. 
On the right side parts of the superficial muscles have been removed and the scutiform cartilage turned back to 
display the deeper muscles, a, Frontal part; a’, temporal part of fronto-scutularis; 6, interseutularis; ¢, cervico- 
seutularis; d, e, scutulo-auricularis superficialis superior and medius; /, zygomatico-auricularis; g, scutulo-auricularis 
superficialis accessorius; 0, cervico-auricularis superficialis; g, seutulo-auricularis superficialis inferior; ¢, seutiform 
cartilage; u, parieto-auricularis; v, cervico-auriculs fi 
scutulo-auricularis prof. major et minor; y, temporalis., (Ellenberger-Baum, Anat. d. Haustiere.) 
is profundus major; w, cervico-auricularis prof. minor; 2, 2 
nular cartilage; it passes upward to be inserted into the lower part of the anterior 
border of the conchal cartilage. 
The intrinsic muscles are very small and of little importance. They are as 
follows: 
1. The antitragicus consists of a few bundles which are attached to the conchal 
cartilage behind the junction of its two borders, and are partially blended with the 
insertion of the parotido-auricularis. 
2. The helicis is a small muscle attached in a position opposite to the preceding 
on the anterior border of the conchal cartilage; it extends also into the depression 
between the two divisions of the border. It is in part continuous with the insertion 
of the parotido-auricularis. 
