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DEVELOPMENT AND LIFE-HISTORIES OF TELEOSTEAN FISHES. 
Pratt XVI. 
941 
1. Pleuronectes flesus, larva 13 days old, April 26, 1886, (reduced) x 40 
2. Gadus merlangus, early larva, April 24, 1885, 4 x 40 
3. Pleuronectes limanda, 11 days old, May 22, 1886, . x 56 
4. Dorsal view of the same, x 50 
5. Slightly oblique view of an aavanced larva ‘ot Pleabaonectes alae May 1, 1886, : x 15 
5a. Slightly oblique view of an advanced larva of _,, 3 May 7, 1886, dorsal 
aspect, . ‘ : : . Magnified 
6. Anterior end of the larva of Ie Thani, Sth day tice emerging, May 19, 1886, . Magnified 
7. Advanced larva of Liparis montagui, April 13, 1886, ‘ , x 18 
8. Larva of Trigla gurnardus, 3rd day out, May 31, 1886, x 50 
9. Advanced larva of Cottus scorpius, April 13, 1886, x 18 
10. Abnormal ovum of Trigla gurnardus, July 8, 1885, x 40 
Prats XVII. 
1. Gadus eglefinus, larva, 7 days old, with circulation active, April 19, 1886, . x 40 
2. Motella mustela, advanced larva, May 11, 1886, x 90 
3. Cyclopterus lumpus, artificially extruded om the egg-capsule, Enlarged 
4, Undetermined larva, with oil-globule, newly emerged from the ovum fared on Plate V. fig. 4, x 40 
5. Trigla gurnardus, post-larval stage, August 23, 1886, x 20 
6. 33 % post-larval stage, older stage, dorsal view, Aehac 16, 1886, Enlarged 
he Fe 55 post-larval stage, older stage, side view, August 16, 1886, Enlarged 
8. Young Gadus morrhua, June 11, 1886, . : . About natural size 
9. Larva of Molva vulgaris on the 2nd day, May 8, 1886, x 50 
10; Marva ‘of ~,, » 13 days old, May 13, 1886, x 80 
11. Post-larval Cottus quadricornis, 5 x 8 
12. Advanced larval stage of Gadus merlangus, x 50 
13. Newly-hatched larva of Solea vulgaris, x 52 
Puate XVIII. 
1. Undetermined Pleuronectid, 24th hour after hatching, April 7, 1887, x about 75 
2. Another undetermined Pleuronectid, 2nd day out (for ovum, vide Plate XIII. fig. 3), 6 x 40 
3. Post-larval ling (Molva vulgaris), showing long ventral fins, ; 8 ili) 
4, Post-larval ling ,, 5 showing long ventral fins (later stage), : : x 5 
5. Post-larval rockling (Motella), showing long ventral fins (later stage). The dorsal fin is 
entered in the text as df, ; F : xe 6 
6. Post-larval rockling (Motella), younger stage than fig. 5, ian 
7. Post-larval “witch” (Pleuronectes cynoglossus), : 5 aide 
8. Post-larval “ witch” =! 35 older stage, x5 
9. Advanced post-larval stage ,, oS 
10. Advanced post-larval stage of armed ballesd (ge gonus Lasagne Pepa yal 28, 1887, .xabout 9 
11. Late larval stage of the same, April 4, 1887, 5 ; : ‘ . x about 20 
Pratt XIX. 
1, Young turbot (Rhombus maximus), August 23, 1886, . x about 10 
2. Post-larval stage of Gadus morrhua, in spirit, May 1887, <i 
3. The same at a somewhat older stage than fig. 2, xa 
4. Young Cottus scorpius, May 6, 1887, <ul 
5. Larval flounder (Pleuronectes flesus), Ist day out, x 50 
6, Post-larval stage of the angler (Lophius piscatorius), Eee 
7. Larval haddock (Gadus ceglefinus), 1 day old, ventral Toe: ; ‘ : x 3D 
8. Larval cod (Gadus morrhua), 3rd day after hatching, Slightly larger than natural size 
