Fig. 107. Intromittent organ of the tailed frog of America, Ascaphus truei. (After 

 Noble, '31.) (A) Cloacal appendage. (B) Ventral view of same. (C) Fully distended 

 appendage, showing spines on distal end. Opening of cloaca shown in the center. 



SPERM ATHECA 



. ■•"^,^ DOR SAL 



Fig. 108. Diagrammatic sagittal sections of the cloacas of three salamanders, showing 

 types of spermatheca. (A) Nee turns. (B) Amhystoma. (C) Desmognathus. (Re- 

 drawn from Noble, '31.) 



190 



