96 The Alligator and Its Allies 



the upper transverse processes of the last three 

 neck vertebras, and, becoming tendinous, is in- 

 serted on the hinder border of the squamosal. 



Collo-occipitis. Arises from the transverse pro- 

 cesses of the posterior five cervical vertebras, 

 extends directly forwards on the ribs of the verte- 

 bras, and is inserted under the articular surface of 

 the lateral occipital. 



Occipito-epistropheus (short, straight, hinder 

 head-muscle, or extensor). This muscle springs 

 from the lateral surface of the body of the second 

 neck vertebra and inserts itself on the basi-exoc- 

 cipital, under the preceding muscle. 



Cervicalis Adscendens, Arises in great part 

 from the angles under the most anterior ribs; a 

 smaller part appears farther above where it is 

 covered by the rhomboideus muscle. It is in- 

 serted on the upper side of the five posterior cervi- 

 cal ribs and on the distal ends of the long second 

 cervical rib. 



THE MUSCLES OF THE SCAPULA 



Capiti-sternalis (Sterno-mastoideus) . This is a 

 fairly large muscle, on the side of the neck, that 

 extends from the skull to the breast and from the 

 middle of the neck is divided into two portions: 

 (a) an anterior part or atlanti-mastoideus (Plate 

 I., Figs, i and 2, cst 1 ) (upper end of the :< head 

 nodder," sterno-mastoideus, anterior part of 



