72 



ILUNOIS BIOLOGICAL MONOGRAPHS 



172 



EXPLANATION OF PLATE 



Fig. 1. — Dorsal view of model of nasal capsule of Amblystotna punciatum 11 mm. long. 

 Fig. 2. — Dorsal view of model of nasal capsule of Amblystotna puncMum 20 mm. long. 

 Fig. 3. — Dorsal view of model of nasal capsule of A tnblystoma punctalum 25 mm. long. 

 Fig. 4. — Side view of model of nasal capsule of Ambly stoma punctatum 25 mm. long. 

 Fig. 5. — ^Dorsal view of model of nasal capsule of Amblystotna punctatutn 34 mm. long. 

 Fig. 6. — ^Ventral view of model of nasal capsule of Atnblystottm puttctatum 34 mm. long. 

 Fig. 7. — Dorsal view of model of nasal capsule of Amblystoma punctatutn 45 mm. long. 

 Fig, 8. — ^Ventral view of model of nasal capsule of Atnblystottia putictalutn 45 mm. long. 



median nasal incisure 

 processus antorbitalis 

 planum basale 

 pons ethmoidalis 

 planum tectale 

 planum verticale 

 trabecula 



