696 Dr. HARRIS H. WILDER, A Contribution to tlie Anatomy of Siren lacertina, 



Miscellaneous. 



A p. Antorbital process. 



E. Ethmoid. 



F. Frontal. 



Gl. Intermaxillary glands. 



Gl.Th. Thyroid glands. 



IN. Internasal septum. 



M. Partition dividing the nasal 



- cavity. 

 N C Nasal cartilage. 

 NO A. Anterior nares. 



NOP. Posterior nares. 



PS. Parasphenoid. 



PMX. Praemaxillare. 



Proc Lat Processus lateralis. 



p. Parietale. 



aryt. Arytenoid cartilage. 



cav. im. Intermaxillary space. 



eric. Cricoid cartilage. 



V P. Vascular plexus. 



Description of Figures. 



Plates XXXIX— XL. 



Pig. 1. Superficial muscles of head. 



Fig. 2. Superficial muscles of the gills and shoulder girdle. 



Fig. 3. 2"'' and S'*^ portions of masseter; superficial nerve trunks. 



Fig. 4. Ventral side of head and neck. (On the left, the superficial 

 muscles have been removed.) 



Fig. 5. Head from below, after the removal of the muscles, showing 

 the alveolar and anterior palatine nerves. 



Fig. 6. Distribution of vagus and glosso-pharyngeus. A comparison 

 with fig. 2 will serve to interpret the figure. 



Fig. 7. Muscles of the gill arches, hyoid apparatus and larynx (ventral). 



Fig. 8. Ramus recurrens vagi and its branches. 



Fig. 9. A diagrammatic figure of the cranial nerves (mainly a recon- 

 struction from sections). 



Fig. 10. The cartilages of the larynx from the ventral side. (Recon- 

 struction by means of checked paper.) 



Fig. 11. The forward portion of the skull from above, with the nasal 

 capsules. (On the right the bones have been removed.) — In part 

 a reconstruction. 



Fig. 12 A, B, C. Sections through the region figured in fig. 11. In 

 the latter figure the lines A, B and C indicate the places where 

 the sections were taken. 



