Plate IV 



Amplexation 

 Normal types. 



1 . Pectoral, Ranidae, Rana pipiens, Ithaca, N. Y. 



2. Inguinal, Scaphiopodidae, Scaphiopus holbrookii, Hilliard, Ha. August i6, 1922. 



3. Axillary, Hylidae, Hyla versicolor, Ithaca, N. Y. 



4. Axillary, Brevicipitidae, Gastrophryne carolinensis, Billy Id., Ga. June 29, 192 1. 



Abnormal 



5. Preaxillary, Gaslrophryne carolinensis, Billy Id., Ga. May 21, 1921. 



6. Multiple amplexation, Pseudacris ocularis, The two upper are males, Billy Id., 



Ga. May 26, 1921. 



7. Cross embrace of a male Bufo valUceps with a female Rana pipiens, Beeville, 



Tex. March 27, 1925. 



8. Two males in embrace, Hyla versicolor, Chesser Id., Ga. August 12, 1922. 



