124 The Alligator and Its Allies 
ered by the origins of the ischio-femoralis, pubi- 
ischio-tibialis, and flexor tibialis internus muscles. 
It is inserted, by a strong, short tendon, on the tro- 
chanter, somewhat caudad to the insertion of the 
pubi-ischio-femoralis internus. 
Pubi-ischio-femoralis Internus (Plate III., Fig. 1, 
p. is. f. int., Plate IV. Figs. 1 and 2, p. is. f. int.) 
(as a whole: Iliacus internus+Quatuor pectinei 
[partim]; in parts: I. and II.: Kamm-Muskeln, 
Pectineus inferior [I.]+superior [II.], Marsupialis 
internus, Obturator internus; III., Iliacus [Darm- 
beinmuskel], Iliacus internus). This muscle 
arises by two or three parts: I. The anterior 
arises, without tendon, from the greater part of 
the inner and anteriorly directed surface of the 
pubis; median to this, in the alligator, is a small 
bundle, II., which unites with part I. These 
unite with the pubi-ischio-femoralis externus to 
form a strong tendon that is inserted on the tro- 
chanter. 
III. This is a larger muscle that springs with- 
out tendon from the inner surface of the body and 
transverse processes of the twenty-fifth and twenty- 
sixth (in alligator) vertebree, from the part of the 
ilium that lies between these transverse processes 
and the ischium, and from a small part of the 
ischium. It is inserted on the whole inner sur- 
face of the proximal third of the femur. 
Pubi-ischio-femoralis Posterior (Plate III., Fig. 
I, p. is. f. post., Plate IV., Figs. 1 and 4, p. is. f. 
