236 



ANATOMY OF VERTEBRATES. 



tubcB, fi""S. 148, 149, 4, arises from the mastoid, and is inserted 

 into the postero-inferior angle of the tympanic and into the begin- 

 ning of the eustachian tube. 



The following are muscles of the hyoidean arch and appen- 

 dages. The mylohyoideus, fig. 153, 13, extends transversely between 

 the mandibular rami, and is attached to the hyoid by its median 



152 



raphe. The iniio/ii/Didnis, llgs. 150, 152, 14, arises from the 

 coracoid, and is inserted into tlie basi-, cerato-, and thyro-hyals. 

 The r/eniohi/o/flcHs, fiis;^. 150, 15"2, iri, iB, arises from the back part 

 of the symphysis niaiidihuhe ; is united to its fellow as far back 

 as tlie basihyal, and there diverges to its insertion into the cera- 

 tohyal. The /n/oiiin.ii/hiris, fig. 150, 16, arises from the articular 

 clement and is inserted into the ceratohyal. The gi-iihylossus, 



