ARLY DEVELOPMENT OF DESMOGNATHUS FUSCA. 

 WILLIAM A. HILTON. 



PLATE IV. 



mm^^ 



38 



/ 



r-r^'n 



I 



40 



41 



42 



,'^ 



43 



45 



47 



3 Journal of Morphology. — Vol. XX, No. 4. 



