122 KANSAS UNIVERSITY QUARTERLY. 
is, into the fascia lata, lateral margin of patella, hgamentum patella, 
especially into anterior spine of tibia, and below into anterior 
fascia of the leg. From the deep surface of the biceps near its in- 
sertion a strong aponeurosis passes beneath the tenuissimus to 
join the gastrocnemius at its lower third, but the fibers may be 
traced to the heel. From Dr. Allen’s description it appears that 
with the exception of the slip to the soleus, he found the insertion 
entirely on the patella and head of tibia, it being much more re- 
stricted than in my specimens. ‘The aponeurosis passing to the 
gastrocnemius probably corresponds to the ‘‘slender fascicle” 
described by Dr. Allen and, if so, does not differ greatly. alate 
origin by ‘stout aponeurosis from the spine of the sacrum’ was 
not present in any of my specimens. Sacrum may be a misprint 
for ischium, for I found no origin from the spine of this bone. The 
division of the ischial origin into two portions, in Dr. Allen’s vari- 
ation, was evident in all of the specimens examined, but the parts 
soon joined, 
Tenuissimus; Plate XIV, Ten. 
The muscle is better developed than in the cat. It arises from 
the deep surface of the gluteus maximus and passes to the caudal 
border of the biceps, along the lower fourth of which it descends 
to be inserted into the fascia of the leg below the biceps. In one 
of the males the posterior border of the muscle received at the 
distal third a thin strip from the caudo-tibial division of the semi- 
tendinosus. This muscle, owing to its advantageous insertion, 
materially aids in flexing the leg upon the thigh. 
Semitendinosus; Plate XIV, St., Stc.; Plate XV. St.; Plate XVI, Figs. 6 and 
Gy ot: 
The semitendinosus arises from the postero-lateral portion of 
the tuberosity of the ischium and from caudal vertebra. aians: 
ischial origin envelopes the origin of the biceps behind and is 
slightly joined to that muscle for a short distance. The caudal 
origin is from the transverse processes of the first two caudal ver- 
tebre. The origin from the first is in common with the caudal 
origin of the gluteus maximus and is not as extensive as that from 
the second. ‘This caudal portion passes over the biceps and along 
the anterior border of the ischial part which it joins at the middle 
third. In one-specimen a delicate fascicle passed from the middle 
of the semitendinosus to the tenuissimus (see plate XIV), The in- 
sertion, which is by flat tendon into the middle of the tibial crest 
and by fascia into the mesal surface of the tibia, underlies the 
aponeurotic part of the insertion of the gracilis. Dr. Allen found 
