THE RABBIT. 353 



munis digitorum : ^r, eracilis, removed in B with the exceptiDn of its 

 origin : gs^, inner head of gastrocnemius : l.a, linea alba, Ig.pa, liga- 

 mentum patells : ob.ex, obliquus externus abdominis : pc, pectineus : 

 //, plantaris : q.lb, quadratus himborum : qu.\, superficial head of 

 rectus anticus I qu.l \ its deep head: qu.2, vastus internus, mostly 

 removed in B : qu.s,, crureus : r.ab, recius abdominis : sa, sartorius, 

 removed in B : s.m, semi-membranosus : s.t, semi-tendinosus : t.ach, 

 tendo Achillis : ib.a, tibialis anticus-. 



vertebrse : in its anterior half it forms the inner slope of the 

 great longitudinal muscular ridge, which lies close to the 

 middle line and has embedded in it the long transverse 

 processes of the lumbar vertebrae : at about the middle of 

 its course it turns outwards and is inserted into the lesser 

 trochanter of the femur : its insertion is best seen after 

 some of the muscles of the thigh have been removed (§ 448). 



434. The quadratus lumborum {q.lb), a large muscle 

 lying just external to and having the same general direction 

 as the preceding : it forms the external slope of the muscular 

 ridge mentioned above, as well as the whole of its deeper 

 portion : it consists of two parts separated by the transverse 

 processes of the lumbar vertebrae, the inner arising from the 

 last five thoracic and all the lumbar vertebrae, the outer from 

 the five last ribs and corresponding transverse processes and 

 from all the lumbar vertebrae : it is inserted partly into the 

 lumbar vertebrae, partly into the pubic border of the ilium. 



435. The psoas parvus {ps.p), lying internal to about 

 the posterior half of the psoas magnus : it arises from the 

 bodies of the four posterior lumbar vertebrae, and is inserted 

 into the pubis by a tendon which acquires a connection 

 with Poupart's ligament {p.lg). 



436. The iliacus (//), a broad muscle, arising from the 

 ventral faces of the last lumbar and first sacral vertebrs, and 

 passing obliquely outwards and backwards to be inserted, 

 along with the psoas magnus, into the lesser trochanter 

 (§ 448). 



A A 



