DEVELOPMENT AND LIFE-HISTORIES OF TELEOSTEAN FISHES. 935 
EXPLANATION OF PLATES. 
[The Plates were drawn under the impression that they would be published by the Fishery Board for Scotland. 
This was found to be impracticable. The larger share of the cost of their publication was borne by the Royal 
Society of Edinburgh, part of the balance being defrayed by a grant from the Fishmongers’ Company of 
London. | 
Puate I, 
Fig. 1. Ovum of Liparis montaguz, pinkish in colour and with pitted capsule, : : 3 x 50 
Fig. 2. Ovum of Cottus bubalis (2), showing boldly corrugated zona radiata, : : : x 24 
Fig. 3. Ovum of Cottus scorpius, . : : c c : : x 24 
Fig. 4. Ovum of Liparis montagui, with Oitied eaale Adjacent ova are attached by strong 
facets, . A 6 : : : ; : x 40 
Fig. 5. Fertilised ovum of Chinen sprattus, " : : : : x 56 
Fig. 6. Ovum of Zeugopterus punctatus, in ripe (anitertilised) eonition! x 56 
Fig. 7. Fertilised ovum of 7rigla gurnardus, cells at the edge of the blastoderm, x 90 
Fig. 84.7. gurnardus, pigment-corpuscles present at the closure of the blastopore, . : : x 205 
Fig. 80. 5 pigment-corpuscles present at the closure of the blastopore, : x 205 
Fig. 9. Spermatozoa of 7rigla gurnardus, : 5 : Highly magnified 
Fig. 10. Ova of Molva vulgaris, floating in calm water, NSN a sera disposition. The ring 
next the central oil-globule indicates the blastoderm, . : ; : . x about 10 
Fig. 11. G. eglefinus, micropyle and accessory structure in oblique view,  . 5 : : x 415 
Fig. 12 x micropyle in profile, . . ; : g : : : x 205 
a, external crater; 6, smaller internal orifice ; ¢, conical internal elevation. 
Fig. 13. 55 micropyle in profile, another view of a later condition in an ovum 44 hours 
after fertilisation, : : - : é x 400 
Fig. 14. %) micropyle in profile, 6 hours after fealieenon : : : : x 500 
Fig. 15. 3 micropyle and accessory structure, oblique view, : x 510 
[The artist has placed the accessory structure above instead of at litie side of the 
micropyle. | 
Fig. 16. 7. gurnardus, surface view of an abnormal zona radiata, . x 205 
Fig. 17. a, 6, c, d, and e, successive changes observed in the polar fucleae body apparently ‘ike 
union of male and female pronuclei in the ovum of 7. gurnardus: a, at 25 mins. ; 
b, 30 mins.; c, 38 mins.; 7, 46 mins.; e, side view of another similar body, : ; x 75 
Fig. 18. Plewronectes microcephalus, surface view of dotted and reticulated zona radiata, . : x 350 
Fig. 19. Trigla qurnardus, zona radiata with linear arrangement of dots, . F : ; x 300 
Fig. 20. Pleuronectes platessa, zona radiata showing dotted structure, c . : x 415 
Fig. 21. Liparis montagut, nearly ripe ovum, with reticulated capsule and oil- papal . 6 x 156 
Fig. 22. Oblique view of the same. 
Fig. 23. Agonus cataphractus, reticulated zona radiata, F < : : : 5 x 250 
Fig. 24. Cyclopterus lumpus, zona with dots of two sizes, . x 205 
Fig. 25, Anarrhichas lupus, zona in section, stained with Peomaatelin cig affects ony a ‘lin 
linea, . $ x 435 
Fig. 26. Ovum of Solea maleane 78, wed fot abens so as es show the ring formed 2 the groups of 
small oil-globules ; the rim of the blastoderm is observed internally, and certain parasitic 
infusoria are seen externally, July 12, 1888, . : : : : . x about 40 
Prate II. 
Fig. 1. Pleuronectes flesus, vertical section through middle of blastoderm, 2nd day, April 7, 1886, x 175 
Rigs Zit 55 By vertical section through middle of blastoderm, nearer the margin than 
rbibaied DIB : : ; ; é : 3 x175 
