SKELETON OF BIMANA, 



561 



are shown. The bony palate arched both lengthwise and trans- 

 versely is formed by the palatines, 20, maxillaries, 21, and small 

 confluent premaxillaries, 22, supporting the incisor teeth. Xhe 

 pterygoid appendage is marked 25. 



373 



374 



Longitudinal vertical section of European skull. 



The * liyoid bone,' fig. 374, consists of a ' body ' (basi-hyal), two 

 'lesser cornua' (stunted cerato-hyals) , and two 'greater cornua' 

 (thyro-hyals). The body, B, 41, is compressed antero-posteriorly, 

 curved and extended transversely, with a prominent tubercle from 

 the fore part, answering to that 

 which supports the ' glosso-hyal,' 

 fig. 305, gh, in the horse ; it is not 

 expanded and excavated behind, 

 as in Apes. The cerato-hyals, 

 40, are reduced to mere pisiform 

 nodules of bone projecting from 

 the line of union of the basi- and 

 thyro-hyals. The ligaments which 

 pass from the ' lesser cornua ' to 

 the ' styloid processes ' represent 

 the rest of the ' cerato-hyals ' with 

 the ' epihyals,' in primitive scle- 

 rous tissue. The greater cornua, 

 46, are attached to the body by 

 an expanded end ; a layer of car- 

 tilage intervenes to a late period ; 

 the opposite end is slightly expanded and sometimes bears an 



VOL. II. o o 



Human liyoid-boue, a upper 

 nat. size. 



