PLATE 6 



DEVELOPMENT OF THE SKILL OF EMYS 



B. W. KUNKEL 



o.spn 



cptr. 



EXPLANATION OF ridt'ItlCS 



30 Ventral view of the olfaetoi-y fajjsule of an embryo having a earapace length 

 of 7 mm. showing the cartilago parase])talis (cp.) separated from the septum n:isi 

 as far anterior as the lamina terminalis anterior (/./.</.) and consequently the 

 foramen praepalatinum not enclosed posteriorly. X 20. 



31 Posterior portion of the right otic capsule viewed from in front and slightly 

 from the median line, showing especially the groove in wliich the n. glossopharyn- 

 geus passes through the capsule between the foramen glossopharyngei internum 

 {f-g-i.) and the foramen glossopharyngei externum (f.g.e.), and also showing the 

 opening of the canalis perilymphaticus (c.per.) into the cochlear cavity. X 24. 



780 



