330 On the Muscular Anatomy of the Leg of the Crocodile. 



intertrochanteric line leading to the outer side of the femur. It 

 lies outside the iliacus. 057 oz. 



18. M. iliacus. Origin : from the anterior transverse surface 

 of the ilium, with a slip from the spine. Insertion : altogether 

 into the lesser trochanter. Oil oz. 



19. M. sartorius. Origin : behind the origin of the rectus, 

 on the inner side, at the junction of the ilium and marsupial 

 bone. Insertion : into the fascia of the inner side of the thigh, 

 for two-thirds of its length. 0*04 oz. 



20. M. gracilis takes an origin from two heads, one at the 

 posterior point of the pubis and the other on the pectineal line. 

 Insertion : into the head of the tibia by a tendon common to it 

 with the semimembranosus. 0*08 oz. 



21. M. pectinffius. Origin: between the two heads of gra- 

 cilis, from the central part of the surface of the pubis and from 

 the pectineal line. Insertion : into the top of the linea aspera. 

 006 oz. 



22. Mm. adductores. There are three adductor muscles : — 

 1st adductor. Origin : anterior pectineal line of pubis. In- 

 sertion : into the upper half of the linea aspera. 0*13 oz. 



2nd adductor. Origin : from posterior edge of pubis, its middle 

 third. Insertion : into the middle of the linea aspera. 0-03 oz. 



3rd adductor. Origin : from the posterior edge of the pubis, 

 close to the symphysis. Insertion : into tlie back of the top of 

 the fibula, with a fascial union with the tendon of semitcndi- 

 uosus. 005 oz. 



23. M. obturator externus ? Origin : from the tuber ischii, 

 the posterior edge of the ischium, and the obturator membrane. 

 Insertion : an oblique line in the back of the femur, below the 

 insertion of the quadratus femoris. 0-13 oz. 



24. M. marsupialis externus. 0*07 oz. 



25. M. marsupiahs internus. 0*10 oz. 



These two muscles take their origin respectively from the 

 outer surface of the marsupial bone, and from its inner surface 

 and the last abdominal rib ; and they are inserted by a common 

 tendon into the top of the posterior intertrochanteric line. 

 Their action is to rotate the femur directly inwards. 



26. M. flexor proprius hallucis. Origin : from the outer 

 condyle of femur. Insertion : into the first, second, and third 

 toes. 002 oz. 



27. M. flexor digitorum communis. Origin : from the fibula 

 and tibia. Insertion : into the first, second, and third toes. 

 005 oz. 



28. M. tibialis posticus. This muscle is inserted into the 

 tarsal ends of the first, second, and third metatarsal bones. 

 0-06 oz. 



