HERRING, GASPEREAU, SHAD AND OTHER CLUPEOIDS 109 



SESSIONAL PAPER No. 22a 



EXPLANATION OF PLATES. 

 Plate VIIL 



Fig. 1. Cliipea harengus. Herring, newly-hatched hirva 5 mm. x 12. 



" 2. " post-larval stage 12 mm. x 6. 



" 3. " " advanced stage about 40 mm. x 2. 



" 4. " " advanced stage about 46 mm. x 2, 



" 5. " " 3i inches long. About natural size. 



Fig. 6a. Clupea pilchardus. Pilchard, egg containing embryo 1 '6 mm. in diameter 



x25. 



" 6h. " " newly-hatched larva, 1 '6 mm. in diameter x 20. 



" "^e./b " " post-larval stage, 9th day 5 -5 mm. x 18. 



" )) " " late post-larval stage 11*5 mm. x 10. 



Fig. 8. Clupea sprattus. Sprat, newly-hatched larva 3 -6 mm. x 15. 



" 9. " " larva on 10th day x 20. 



Fig. ■^.{^Pomoh'bus pseudoharengus. Gaspereau, post-larval stage 15 mm. x 6. 

 " -ii./l ^' " later post-larval stage 16 -5 mm. x 5. 



Plate IX. 



Fig. 12. Clupea finta. Twaite Shad, newly-hatched 4-25 mm. x 16. 



" 13. " " post-larval stage, 6 days old 8 :7 mm. x 10. 



" 14. " " post-larval stage, 20 days old 14 mm. x 6. 



" 15. " advanced stage, 30 or 40 days ( ?) old 20 mm. x 4. 



" 16. " " probably 45-50 days old 24 mm. x 3. 



Fig. 17. Alosa sapidissima. Shad, just hatched, x 9. 



" 18. " " post-larval stage, 5th day x 6. 



" 19. " " post-larval stage, 17th day x 5. 



" 20. " " post-larval stage, 41 mm. x 2i 



" 21. " " egg containing early embryo. 



" 22. " " egg with advanced embryo. 



Fig. 23. Clupea finta, enlarged head of:, when 57 mm. long x 2^. 



Fig. 24. Alosa sapidissima, enlarged head of, when 61 mm. long x 2|. 



Fig. 25. Portion of egg-capsule of Clupea finta, showing external reticulated marking, 

 X 240. 



Plate X. 



Fig. 26. Pomolohus pseudoharengus. Gaspereau;, 30 mm. slightly enlarged. 



27. " " 35 mm. 



" 28. " " 3 inches 



" 29. " " 3:i inches " 



" 30. " " scale from the dorsal below the base 



of the dorsal fin, x 20. 



Fig. 31. Clupea harengus. Herring, scale from the dorsum below the base of the 



dorsal fin, x 20. 



Fig. 32. Pomolohus pseudoharengus, abdominal scale or scute from the median ven- 

 tral ridge of the body x 20. 

 " 33. • side view of abdominal scale or scute from the 



median ventral ridge of the body x 20. 



22a— 10 



