PLATE 4 



EXPLANATION OF FIGURES 



63 From the oviduct of Rai;a.;esculenta. 



64 and 65 From the oviduct of Rana temporaria. 



66 to 67 From the oviduct of the triton, figure 67, surface view. 



68 A ciliated cell from the abdominal endothelium of Rana temporaria. 



69 to 71 From the trachea of Trigonocephalus. 



72, 73 From the efferent tubule of testis of Elaphis. 



74, 75 From the efferent tubule of testis of Trigonocephalus. 



76 From the efferent tubule of testis of a lizard. 



77, 78 From the oviduct of a lizard. 



79 to 83, 85, 86 From the efferent tubule of testi.s of the mouse, figure 83 sur- 

 face view. 



84, 87 to 90 From the efferent tubule of testis of the rat, figure 90 surface 

 view. 



91 to 95 From the trachea of the rat, figure 95 surface view. 



278 



