THE MUSCULAR SYSTEM 



251 



a broad sheet upon each side, much as in marsupials (Fig. 

 67, B), but within this Order it is seen to separate into axil- 

 lary and inguinal portions (Fig. 67, C and D) and in the an- 

 thropoids, the former alone remains, much reduced in size 

 (Fig. 68). In man there appear to be normally no traces of 



FIG. 68. Anterior remnant of the panniculus carnosus, " achselbogen," 

 in the gorilla. [After TOBLER.] 



pmj, pectoralis major; fcb, coraco-brachialis fascia; Id, latissimus dorsi; pa, 

 " pectoralis quartus," a part of the panniculus; x, tendinuous fibers from the 

 latter. 



this muscle, but there occurs occasionally a system of slips in 

 the axillary region, the axillary arch ("Achselbogen") asso- 

 ciated with both latissimus and pectoralis and very variable in 

 appearance, a typical characteristic of a rudiment. In asso- 

 ciation with this, there occasionally develops a more posterior 

 pectoralis slip, the pectoralis abdominis, a relic from a remote 

 part. Still another rudiment of the panniculus system is seen 



