LETTEEING ADOPTED IN ALL THE FIGTJEES. 



EXPLANATION OF PLATE XLIX. 



Figs. 25 to 33. 



\_The pigment, except when otherwise specijied, is shouti as by reflected light.'] 

 Figure 



25. Egg of Species VII., four days older than fig. 18, pi. n. 

 25a. Part of notochord of same, more highly magnified. 



26. Egg of Species I. Solea. (?) 



27. Egg of Species YIII. 



28, 29. Larva of Species IV. Ctenolahrus rupestrts. (?) 

 view. 



30. Cephalic region of same, more highly magnified. 



31. Egg of Trachinus vipera, early stage, x 40. 



32. Advanced stage of same, more highly magnified. 



33. Egg of Species IX. (by transmitted light). 



Some time after hatching. Ventral and profile 



[6] 



