rior frequently takes some fibres of origin from upper border of
ro-arytenoideus. I have found one or both of these strata in about
shalf of the cases in which they were carefully sought for before











44 Proceedings of the Royal Irish Academy.
mecnisins 6 he tae Oe ee ee
take origin from the side of the thyroid body. is
in about one per cent. of subjects examined. I haye not |
ap ction,


:
4


T have Soe gir nes te Ughtgeabes subjects: once bila’

Pharyngo-mastovdews (Ketel)—Arises from the anterior a
aspect of the mastoid process, and passes inwards between.
and middle constrictors of pharynx to its insertion into thi
wall of the tube, blending with the fibres of these muscles.
met with three examples,

Salpingo-pharyngeus (Sandifort)—A muscular fasciculus
from Eustachian tube to side of pharynx behind the palato-pha:
I have met with one example.
Scalenus anticus—I have occasionally seen this muscle |
‘vertebral origin eS ee ee 4
other pres SN peculiarity I have ever observed is, that
instances I found the phrenic nerve piercing its fibres.
Scalenus medius.—The superior attachment of this musele, a
has correctly pointed out, is from the anterior, not the posterior t
of transverse processes of the cervical vertebrae, as other an
describe it. The usual number is six—all excepting the atla:
have found the number to vary from three, the smallest, to al
In one case I found it attached below to the second rib onl:
very large proportion of subjects I found its vertebral attachme
inseparable from the scalenus posticus.
Scalenus posticus.—In only two instances did I observe any
anomaly of this muscle. One was complete absence. The ot
attachment of lower end to third rib.
