PLATE 3 



EXPLANATION OF FIGURES 



11 Chrysemys marginata, 8.4 mm., H. E. C. 1075. Wax model of the pharynx 

 and aortic arches. X 60. 



12 Tarsius spectrum, 6.7 mm. The pharynx with the aortic and pulmonary 

 arches. X 100. After Hafferl. Hafferl's figure has here been reversed. In 

 the originals of this and the following figure, the postbranchial body was named 

 the fifth pouch and the pulmonary arch was labeled the sixth arch. 



13 Talpa europaea, 5 mm. Wax model of the pharynx and aortic arches. 

 X 38. After Soulie and Bonne. Their figure has here been reversed. 



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