108 



MK. E. S. GOODRICH OX THE OCCiriTAL REGION 



A larva slightly younger is shown in text-figs. 33, 34, and 35, 

 At this stage the ventral portion of the 2ncl myotome is still 

 preserved. It lies below the vagus between the occipital and the 

 prseoccipital arches. The latter is seen to be a thickening in the 

 inner wall of the auditory cajDsnle, continuous below with the 

 basilar plate (text-fig. 35). A reconstruction of a rather earlier 

 stage seen from above (text-fig. 36) shows the capsule beginning 



Text- fig. 37. 



spg- mt.S 



Left side view of a partial reconstruction of the anterior end. Cartilage is beginning 

 to appear. The traheculfe have been cut short. The pronephric funnels are 

 indicated in metaotic segments 5 and 6. The ventral portion of myotome 1 

 is still present. 



Text fis. 38. 



/J 



n 



spg. na 



Text-fig. 39. 

 vrf^oc. vr. 



brn. 





J 



Partial reconstructions seen from the right side. In te\-t--fig. 38 arc the m^-otomes 

 and pronephric funnels. The trabecula; have been cut short. 



