942 PROFESSOR W. C. M'INTOSH AND MR E. E. PRINCE ON 
Fig. 9. Larval ling (Molva vulgaris), 5th day, May 2, 1886, x 90 
Fig. 10. Larval example of undetermined Pleuronectid, obtained in St Anise Bay 1887, . : x 90 
Fig. 11. A young example of Callionymus lyra, 10 mm. in length, . x 5 
Fig. 12. Ovum of Gadus morrhua in the morula condition ; blastomeres somewhat iieatede x 60 
Puate XX. 
Fig. 1. Anarrhichas lupus, larval tail showing radial striations, x 40 
Fig. 2. at ,, larva just emerged, and viewed from the left ade: Paes 28, 1886; ite 
great vitelline vein is indicated through the semitransparent yolk, . x about 12 
Fig. 3. Tail of the same at a more advanced stage, and when the blood-vessels form a fan, March 2 
1886, x 40 
Fig. 4. Larva of Anarrhichas ae just aaieeeed aaa fon Os right nae January 28, "1886, . x about 12 
Fig. 5. Dorsal view of a newly-hatched larva of the same species, January 1886, . x about 12 
Fig. 6. Group of firmly adherent ova of the wolf-fish (Axarrhichas lupus), with embryos far 
advanced, : : 6 : ‘ Somewhat enlarged 
Fig. 7. Fresh ovum Ganaereeetes) of the same species, . : : ; Somewhat enlarged 
Fig. 8. Surface of lamina of the zona radiata in Anarrhichas, 5 : : x 500 
Fig. 9. Egg of salmon (Salmo salar): ,a, seen from above; 2, viewed laterally, February 2, 
1862, . j - ; : Somewhat enlarged 
Fig. 10. Egg of the same species, nates Renee al Paeetaed: 
Fig. 11. Portion of the zona radiata of the egg of the salmon, viewed as a transparent object, x 300: 
Fig. 12. Caudal region of the embryo of Gadus eglefinus, 9th day after fertilisation, showing the 
neurenteric canal (?), : . d ° : ; c : x 70 
Fig. 13. Rectal region in the larva of Molva vulgaris, showing the communication of the urinary 
vesicle with the early rectal lumen, x 70 
Prats XXI. 
Fig. 1. Anterior end of larval Anarrhichas lupus seen from the right side, February 16, 1886, x 24 
Fig. 2. View of the circulation in the yolk-sac of the same species from the left side, February 23, 
1886, x 44 
Fig. 3. Yolk-sac of more advanced ee of ae hie with oil- piouale on the right nue May L 
1886, x 1S 
Fig. 3a. Yolk-sac of the same larva siewed fin the left aida, May it 1886, . F me its} 
Fig. 4. Oblique view of the head of the larval Anarrhichas, January 1886, . : 7 x 24 
Fig. 5. Group of cells from the yolk-sac of the same form, . j 3 c : x about 650 
Fig. 5a.Altered blood-dises from larval Anarrhichas, : us x about 650 
Fig. 6. Anterior end of segmental duct in the larval cod, aioe 10, 1886 ; rediced from a drawing x 200 
Fig. 7. Sensory bodies beneath the epiblast on the under surface of the aaoiit of embryo of haddock, 
13th day after impregnation, x 435 
Fig. 8. Horizontal section through the myotomes of the Saba onic haddock on the 4th er after 
impregnation, . x 435. 
Pouate XXII. 
Fie. 1. Solea vulgaris, ovum in the lenticular stage, and showing a few of the vesicles of the yolk 
under the periblast. The cells of the blastoderm for simplicity have been omitted, x 50 
Fig. 2. Tail of late larval Anarrhichas in April, the margin being now crenate, and the vessels well 
developed, . x about 60 
Fig. 3. Vitelline circulation in the jarra anit has on Beheaney 22, 1886, as seen a from the right 
side, . : . : : . : x 44 
Fig. 4. Salmon, 1 day old, . : . : : : : . Slightly enlarged 
Fig. 5. Abnormal yolk-sac of salmon, : c : : : : . Slightly enlarged 
Fig. 6. Salmon, 1 week old, 5 : : Very slightly enlarged 
Fig. 7. Yolk-sac of the salmon with the oleae Replied as the ae ; an unusual position. 
