PLATE 24. 



RAIIDAE and NARCACIONTIDAE. 



Fig. 1-2. Raia kenojei (Page 351). Fig. 3. Narke japonica (Page 314). Fig 4-5. Raia 

 ptisCA (Page 349). 



1. Dorsal view of a specimen 17 j inclies long. M. C. Z, 1125. 



2. Mouth and nostrils. 



3. Dorsal view of a specimen 10| inches long. M. C. Z. 1121. 



4. Dorsal view of a specimen 4^ inches long. M. C. Z. 1240. 



5. Ventral view. 



