22 JOURNAL OF THE 



S\^nonymy. Fesser plus the paranieral, S.-D., vol. 

 II, p. 395; o-luteus niaximus, M., p. 154; g-luteus max- 

 imus, G. & T., p. 39. 



The fesser of S.-D. corresponds to our anterior por- 

 tion of the muscle, thoug-h S.-D. omits the origin from 

 the third sacral vertebra. The parameral of S.-D. 

 corresponds to our posterior portion. Here ag^ain we 

 differ slig-htly from S.-D. regarding' the orig-in, which 

 according' to him is from the second and third caudal 

 vertebrae. The difference may easil}^ be due to var- 

 iation. 



Quadratus lumborum. The muscle arises directly 

 by its fibres, and also b\^ tendinous orig-ins, from the 

 dorsal part of the anterior border of the ilium; and 

 from the transverse processes of all the lumbar verte- 

 brae. The fibres of the muscle run forwards and in- 

 wards (mesially), and are inserted both directly and b}^ 

 means of narrow tendons into the centra of all the 

 lumbar and the posterior three dorsal vertebrae. 



This muscle exhibits a remnant of the metamerism, 

 characteristic of the trunk muscles of the embryo and 

 lower vertebrates, in that the narrow tendons are in- 

 serted successive!}^ into the bodies of the vertebrae, 

 thus imperfectly dividing- the muscle into myotomes. 



Synonymy. Ivongfs-sous-intertransversaires de lom- 

 bes, S.-D., vol. II, p. 282; quadratus lumborum, M., 

 p. 156. 



Psoas mag-nus. The muscle arises directly by its 

 fibres from the dorsal part of the anterior border of 

 the ilium; by a few fibres from the transverse process 

 of the last lumbar vertebra; at the extreme anterior 

 end, externall}^ from the aponeurosis covering- the 

 quadratus lumborum; along- its inner border from the 

 centra of the lumbar vertebrae. Over its dorsal sur- 



