42 



BREEDING HABITS OF AMPHIBIA 





Amblystoma jeffersonianum, Jefferson's 

 salamander. (After Bishop) 



Hemidactylium scutatum, the four-toed salamander 

 found on May 1 Ith. (After Bishop) 



EGG-LAYING OF SALAMANDERS 



(Courtesy C. H. Pope. Chicago Mus. Nat. Hist. ) 



AMBLYSTOMA OPACUM , the marbled salamander. This 4 inch salamander is found in 

 the East and Middle West, but not north of a line from Boston to Chicago. It is quite 

 abundant on Long Island and at Bear Mountain, but is difficult to find except during the 

 breeding season during the latter part of September and October. This is a black sala- 

 mander with conspicuous light colored bands across the back. These bands are wider on 

 the sides of the body than on the back. The light colored markings of the male are white 

 and of the female tend to be gray. The male has the characteristically protruding vent. 



Plethodon cincreus, the red-backed 

 salamander, found on July 16th. 



Amblystoma opacum, the marbled salamander found 

 on October 26th in North Carolina. (After Bishop) 



BROODING OF EGGS BY FEMALE SALAMANDERS 

 (Courtesy C. H. Pope 1944: Chicago Mus. Nat. Hist.) 



