PLATE III 



FRILLED SH.-\RK EMBRYOS OF IXTERAIEDIATE 5IZE: 

 39, 46, 48, 54, 55 \L\L 



Fig. 26. An embryo of ^Q- mm portrayed in full-length dorsal aspect. 



Fig. 27. Ventral view — ^full-lengtii — of the 39-mm. specimen. 



Fig. 28. Full-length portrayal in dorsal aspect of a 46-inm. embryo. 



Fig. 29. Lateral full-length \'iew of the 46-mm. embryo. 



Fig. 30. The 46-mm. embryo seen firom belo^w. 



Fig. 31- "Head only stained" of a 48-mm. embryo — ^\'entral aspect. 



Fig. 32- A 54-mm. embr>'o shown in full-length dorsal view. 



Fig. 33. A full-length lateral \-iew of the 54-mm. fishlet. 



Fig. 34. The tadpole-shaped 54-mm. embryo portrayed from below. 



Fig. 35. Dorsal aspect — ^head only — of a 55-mm. embryo. 



Fig. 36. Lateral full-length \-iew of a 55-mm. specimen. 



Fig. 37. Head only of a 55-mm. embryo seen from below. 



All figures on this plate have been reduced by ooe-third their original length. 



