1916] Holliger: Anatomical Adaptations in the Pocket Gopher 471 



Fig. P. Lateral view of shoulder 



tlie leg, X 2. 

 elm. — cleidomastoideus 

 di. — digastric 

 lat. dor. — latissimus dorsi 

 pec. pri. — pectoralis primus 

 pec. quar. — pectoralis quartus 

 pec. sec. — pectoralis secundus 

 pec. ter. — pectoralis tertius 

 retr. — retractor of poucli 

 rhom. cap. — rliomboideus capitalis 

 rhom. ma. — rhomboideus major 

 rhom. mi. — rhomboideus minor 



pec. pri. 



muscles of the gopher after removal of 



seal. — scalenus 



ser. ant. a — serratus anterior, cervical 



portion 

 ser. ant. b — serratus anterior, thoracic 



portion 

 sth. — sternohyoideus 

 stm. — sternomastoideus 

 trap, a — trapezius, cervical portion 

 trap, h — trapezius, middle portion 

 trap, c — trapezius, thoracic portion 

 3 Jf 5 6 7— ribs 



of the mesial surface of the vertebral border of the scapula {ser. 

 ant. a, pi. 39). 



&. The thoracic portion arises from the third to the eighth 

 ribs, inclusive, by separate slips {ser. ant. b, fig. P), and is inserted 

 on the caudal one-sixth of the mesial side of the vertebral border 

 of the scapula. 



14. Deltoideus {spd., acd., fig. S) in the gopher is made up of 

 two distinct parts : 



a. Acromiodeltoideus arises from the outer three-fourths of 

 the ventral surface of the clavicle and the tip of the acromion of 



