OCCURRING IN THE NEIGHBOURHOOD OF PLYMOUTH. 53 



DESCRIPTION OF PLATES I— VI, 



Illustrating' Mr. J. T. Cunningham's paper on the " Reproduction 

 and Development of Teleostean Fishes occurring in the neigh- 

 bourhood of Plymouth/' 



Reference Letters. 



au. Auditory vesicle. p. Body-cavity, e. Eye. ht. Heart. int. Intestine, k. v. 

 Kupffer's vesicle. «. Notochord. s. v. Sinus venosus. o. g. Oil-globules, y. s. Yolk- 

 segments. 



All the figures, except figs. 38 and 39, are drawn from living ova or larvae, with the help 

 of Zeiss's camera luciila, and, except where otherwise stated, with Zeiss's objective A and 

 ocular 2. Sometimes the object was, when drawn, covered with a cover-glass, sometimes 

 not, as specified in the description of each figure. 



Fia. 1. — Ovum of Capros aper, fertilized August 15th, 1837, 6 p.m. Drawn August 

 16th, 10 a.m. (16 hours). 



Fig. 2. — Same species, fertilized same time. Drawn August 17th, 1 p.m. (1 day 19 hours), 

 without cover-glass. 



Fig. 3.— Ovum of Trigla gurnardus, fertilized May 11th, 1888. Drawn May 13th, with- 

 out cover-glass. 



Fig. 4. — Ovum of Trigla cuculus, fertilized April 27th, 1 p.m. Drawn May 2nd, 4 p.m. 

 (5 days 3 hours) ; cover-glass. 



Fig. 5. — Same species, fertilized May 10th. Hatched and drawn May 19th (9 days). 

 Zeiss a^, oc. 2, camera, no cover-glass. 



Fig. 6. — Ovum of Pleuronectes microcephalus, fertilized April 12th, 1 p.m. Drawn 

 April 14th, 4.30 p.m. (2 days 3^ hours). 



Fig. 7. — Same species, fertilized same time. Drawn April 17th, 6 p.m. (5 days 5 hours) j 

 cover-glass. 



Fig. 8. — Same species, fertilized same time. Hatched and drawn April 19th (7 days). 

 Zeiss aj, oc. 2, camera, without cover-glass. 



Fig. 9. — Same species, fertilized and hatched same dates. Drawn April 23rd (4 days 

 after hatching), Zeiss a3, oc. 2, camera, cover-glass. 



Fig. 10. — Ovum of Solea vulgaris, living but unfertilized. Drawn March 8th, 5 p.m. 

 cover-glass. 



Fig. 11. — Same species, fertilized May 16th, 4 p.m. Drawn May 19th (3 days), without 

 cover-glass. 



Fig. 12. — Same species, taken in tow-net at surface outside the end of Plymouth Break- 

 water, March 16th ; cover-glass. 



Fig. 13. — Same species, taken in tow-net on the east side of Plymouth Sound, April 

 18th ; cover-glass. 



Fig. 14. — Ovum of Solea variegata, pressed from the fish May 29th, unfertilized. 

 Drawn after death. May 30th, without cover-glass. 



Fig. 15. — Probably the same species, taken in tow-net south-east of Eddystone Light, 

 July 17th ; without cover-glass. 



Fig. 16. — Ovum of Scomber scomber, fertilized May 24th, 3 a.m. Drawn same day, 

 10.30 a.m. (7^ hours; 135' C), without cover-glass. 



Fig. 17. — Same species, fertilized June Ist, 3 a.m. Drawn June 2nd, 11 a.m. (1 d.iy 

 8 hours), without cover-glass. 



Fig. 18.— Same species, fertilized May 26th, 2 a.m. Drawn May 27th, 5 p.m. (1 day 15 

 hours) ; no cover-glass. 



