938 PROFESSOR W. C. M‘INTOSH AND MR E. E. PRINCE ON 
Fig. 7. Molva vulgaris, aboral end of notochord, 10th day, : A ‘ : : x 200 
Migs 38.) 5; 5, Showing early pigment, 7th day, May 4, 1886, ; ; ‘ , x 55 
Tite BBE oy » embryo still further advanced, 8th day, May 5, 1886, ; j é x 70 
itty »» ventral aspect of embryo, . rs ; ‘ x about 30 
Fig. 11. Pleuronectes imanda, ovum showing protoplasmic eee ¢ - , x about 40 
Prats VI. 
Fig. 1. G. morrhua, surface view of ear, May 10, 1886, . - ; c : ‘ x 210 
Fig. 2. 7. gurnardus, surface view of ear, 7th day, June 22, 1886, : ; : : x 205 
The anterior edge is on the right, and the dorsal is superior. 
Fig. 3. * longitudinal vertical section of the otocystic region; 3 days old, June 1, 1886, x 230 
Fig. 4. s transverse section of the same region; 3 days old, June 1, 1886, . 3 x 230 
Fig. 5. G. cglefinus, anterior end of larva, : : : . 6 : x 150 
Fig. 6. Larva of 7’. gurnardus, from the dorsum, June 15, 1886, . : : : x 156 
Fig. 7. Pleuronectes platessa, head of larva 2 days old, May 1886, . : ; ; Highly magnified 
Fig. 8. T. gurnardus, sensory organ in integument behind the cephalic region, May 12, 1886, ‘ x 156 
Fig. 8a. H sensory organ in integument behind the cephalic region, June 24, 1886, —. x 415 
Fig. 9. Transverse section through the otocystic region of larva of G. aglefinus, 19th day after 
hatching, : : : : : : : : : x about 300 
Fig. 10. Section of the same region, 5 ‘ x 230 
Fig. 11. Otolith of Cottus scorpius, sl; in. long (° 188 men): eee Beonely Grane core sont un- 
stained concentric stratum, c ; i é 4 5 : é x 750 
Prats VIL. 
Fig. 1. G. eglefinus, transverse section, 13th day (7 hours before hatching), April 14, 1886, : x 200 
Fig. 2 + transverse section, 14th day after fertilisation (just emerged), ; : x 150 
Fig. 3 5 transverse section, 3rd day after hatching, April 24, 1886, . ; 3 x 175 
Fig. 4. p transverse section, posterior to fig. 3, 5 : 3 x 175 
Fig. 5 3 transverse section through mid-gut and diverticulum (ewiste ladder), : x 450 
Fig. 6 transverse section, 2nd day out, April 24, 1886, 4 4 : : x 200 
Fig. 6a. x transverse section (section succeeding fig. 6), : : x 200 
Fig. 7. t longitudinal horizontal section, 3rd day out, March 23, 1886, : ; x 135 
Fig. 8. Molva vulgaris, 6 days old, ventral aspect of the alimentary canal, 5 x 250 
Fig. 9. T. gurnardus, longitudinal vertical section of the alimentary canal, 17th day, July 8, 1885, x 175 
Fig. 10. + dorsal view of pectoral fin of embryo before hatching, May 27, 1886, : x 210 
Fig. 11. G. morrhua, section of the anal portion of the gut, 6th day out, May 4, 1886, 5 x 175 
Fig. 12. Molva vulgaris, longitudinal horizontal section through the hind-gut, 2 se old, May 7, Ife 
1886, ‘ : : : x 175 
Bigs: 75, 3 longitudinal horizontal Anta at a lower pene : ; ; x 175 
Fig. 14. ,, i longitudinal horizontal section half-way down marginal fin, 2 x 600 
Hig 1b: , 2 longitudinal horizontal section of the anal opening, on a lower plane fhan 
fig, 14, : : : : c : : 5 x 600 
Puate VIII. 
Fig. 1. Undetermined larva (p) with oil-globule (see p. 861), . : c - : x 25 
Fig, 2. G. eglefinus, 8th day after fertilisation, view of the heart, 8.50 p.m., March 30, 1886, : x 210 
Fig. 3. 7. ger nardus, from right side, focussed deeply: pew, anterior seni) wall, July 18, 
1886, : : : : : : : ‘ x 156 
Fig. 4. 35 ear, eye, and other organs, . ; x 156 
Fig. 5. oF Ist day, slightly oblique view of the eandioe 3 region froth Below June , 1886, x 156 
Fig. 6. Head and anterior region of 7. gurnardus, newly hatched, : ; : a SOD 
Fig. 7. Head of G. wglefinus, 7th day, April 30,1886, . 5 ; , : ; x 65 
Fig. 8. Branchial region of 7. gurnardus, newly-hatched, ; ; : : : x 790 
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