PLATE XVI. 



Fig. 1. Egg of Common Sole, artificially fertilised, April 12, 1889, 10 a.m.; drawn 

 April 15, 4 p.m. Magnified 45 times ; same stage as that shown in PL XV, 

 Fig 6, in profile, o.g. oil globules. 



Fig. 2. An egg of same taken in tow-net off Plymouth (near the Mewstone), March 29, 

 1889 ; drawn March 30 ; same magnification, e. eye. yk. yolk. 



Fig. 3. Larva of same taken 4 m. south of the Mewstone, March 30, 1889 ; right 

 side ; magnified 35 times, yk. yolk. au. auditory organ, na. nasal capsule. 



Fig. 4. Larva of same, hatched March 28, from egg taken off Penlee Point, March 27, 

 left side ; magnified 35 times, ht. heart, pt. pectoral fin. int. intestine. 



Fig. 5. Young Common Sole f inch long, taken in Mevagissey Harbour, May 15, 

 1889 ; magnified 8J times. 



Fig. 6. Egg of the Thickback (Solea variegata), taken in tow- net S. of the Eddystone ; 

 drawn April 21, 1889; magnified 45 times. 



