Macalister — On the Anatomy of Choeropsis Liber leiisis. 499 
The splenius arose from the cervical and upper dorsal spines, and 
was inserted into the occiput and into the atlas ; it had one tendinous 
inscription. The serratus posticus extended from the 6th to the 1 5th 
rib, the trachelo-mastoid was large, and arose from the last cervical 
and from the first dorsal transverse process, and was inserted into the 
para-mastoid process. The complexus arose from the 2nd to the 7th 
cervical vertebrae as well as from the upper dorsals ; the deeper spinal 
muscles were as usual, the scalenus anticus extended from the 1st rib 
to the 2-7 cervical vertebrae, the S. medius from the 5-7 cervical and 
the S. posticus from the 7th cervical, both to the 1st rib. The rectus 
capitis anticus major stretched from the 2-6 cervical vertebrae to the 
basilar process. 
The gluteus maximus, biceps and agitator caudae were inseparable, 
and arose from the fascia over the ilium and the post sacral vertebrae ; the 
insertion was continuous along the outside of the thigh as far as the 
knee, and thence into the head of the fibula and fascia over that bone ; 
this muscle equalled the great pectoral in weight. The gluteus medius 
was thick, extended even above the iliac crest from the lumbar fascia, 
and was inserted as usual ; it was |th the size of the last. There is no 
pyriformis. The gluteus minimus is wide, ^th of the last, and the 
marginal part represents gluteus quartus ; internal to it lies the glu- 
teus quintus, which arises fleshy under the origin of the rectus femoris 
and is inserted into the outside of the femur below the great trochanter; 
this muscle is exceedingly small. The tensor vaginae femoris arises 
as usual, and is inserted into the knee by a strong band and into the 
outside of the thigh ; it is nearly half the size of gluteus medius. The 
quadratus femoris I could not separate from the adductor magnus, nor 
could the condyloid part of this muscle be separated without tearing from 
the semimembranosus; they together made a muscular series equal to the 
gluteus medius. The obturator externus was distinct, the internus and 
its small gemelli was -^rd its size. 
The sartorius was twofold, one part arose from the inner surface of 
the ramus of the pubis ; the fibres passed over the brim .of the pelvis 
and were inserted as usual ; the outer part arose from the sheath of the 
iliacus tendon, and lay parallel and external to the first part; it is at- 
tached partly to the patella and partly to the inner condyle of the tibia: 
both together are half the weight of the gluteus minimus, and the 
outer is to the inner as 1 to 4. 
The psoas magnus arises from the ilium, and from the transverse 
processes of the lumbar vertebrae; it is a large muscle, nearly as large 
as the biceps and gluteus maximus ; the psoas parvus is small, only 
being the 40th part of the magnus. 
The pectineus is very minute, has a very small insertion into the 
femur anterior to and above the lesser trochanter. The adductor longus 
is larger, being i the size of the adductor magnus. The semitendino- 
sus is inserted into a point on the tibia fths from the head ; its origin is 
low down on the tuber ischii; this muscle is equal to the tensor vaginae 
K. I. A. PROC— VOL. I., SER. II., SCIENCE. 3 T 
