324 JOURNAL OF COMPARATIVE NEUROLOGY. 
mm. in length (Fig. 7), apparently approaching the period of 
transformation, the relations are as in the younger specimen 
save that cartilage has appeared in the suspensorio-opercular 
connection as a center distinct from the cartilage of the operc- 
Fig. 7a. Larval Desmognathus fusca, 33 mm. ; c.—stilus columellae; v. 7-— 
vena jugularis; #. 7.—nervus jugularis (R. communicans) ; @. m.—M. 
depressor mandibuli; #. s.—subsquamosal process of the quadrate ; 
§.—Squamosum. 
Fig. 76. Same; three sections farther forward. 
ulum. In a small adult (27 mm.), presumably but recently 
transformed, the cartilaginous stilus is connected more directly 
with the squamosum, but also by dense connective tissue with 
