of tine Fishery Board for Scotland. 



80 



IV. — Literature. 



The following are some papers in which the otoliths of fishes are more 

 or less specially dealt with : — 



Dr. Reibisch. — " Ueber die Eizahl bei PUuronectes platessa und die Alters- 

 bestimmung dieser Form aus den Otolithen." Wissensch. Meeresuntersnch. , 

 1899. Neue Folge Bd. 4, Abthlg. Kiel, p. 231. (This work I have not 

 seen. ) 



Dr. C. Fryd. — -''Die Otolithen der Fisch in Bezug auf ihre Bedeutung fur 

 Systematic und Altersbestimmung." Dissertat. Kiel, 1901. (I have not 

 seen this paper.) 



Dr. J. T. Jenkins. — "Altersbestimmung durch Otolithen bei den Clupeiden." 

 Wissensch. Meeresuntersnch. , 1902. Neue Folge Bd. 6, Abthlg. Kiel, p. 83. 



J. T. Cunningham. — "Zones of Growth in the Skeletal Structures of the 

 Gadidae and Pleuronectidse." Twenty -third Annual Report of the Fishery 

 Board for Scotland, Pt. III., p. 125. et sec, pis. vii.-ix., 1905. 



Dr. W. Wallace. — " Preliminary Investigations on the Age and Growth-rate of 

 Plaice." International Investigations, Marine Biol. Assoc. Report, pp. 

 199-225, pi. i., 1895. 



Dr. Adolf Severin Jensen. — "On Fish Otoliths in Bottom Deposits of the 

 Sea." Meddelelser fra Kommisaionen for Havundersbgelser. Ser. Fiskeri 

 Bd. 1, pp. 1-14, with figures in the text, 1905. 



Some observations on Fish Otoliths by the writer will also be found in Part III. 

 of the Twentieth and Twenty-first Annual Reports of the Fishery Board for 

 Scotland, p. 486 and p. 218, 1902 and 1903. 



EXPLANATION OF THE PLATES. 

 a = anterior end of otolith ; u= upper margin of otolith. 



PLATE I. a. 



Fig. 1-10. Earstones of Codfishes, various sizes 



Fig. 11-13. „ Lythe, 



Fig. 14-16. „ Coal-fishes, ,, 



Fig. 17-18. „ (?) Ling, 



Fig. 19-26. „ Ling, 



Fig. 27. „ a Greater Fork beard, 



slightly enlarged. 



PLATE I. b. 



Fig. 1-8. Earstones of Lesser Forkbeard, various sizes . slightly enlarged. 



Fig. 9-12. ,, several 3-Bearded Rocklings, various sizes 



Fig. 13-17. ,, several 4-Bearded Rocklings, ,, 



Fig. 18. ,, one Flounder, 



Fig. 19-25. ,, several Lemon Dabs, various sizes 



Fig. 26-29. ,, four Witch Soles, ■» ,, 



Fig. 30. „ one Scald-fish, 



Fig. 31-32. „ two Megrims 



Fig. 33. „ one Turbot 



Fig. 34. ,, one Black Sole 



Fig. 35-36. ,, two Solea variegata 



Fig. 37-41. ,, several Solenettes, various sizes . 



Fig. 42-43. ,, two Midler's Topknots 



Fig. 44-45. ,, two Argentines 



Fig. 46-52. ,, several Grey Gurnards, various sizes 



Fig. 53. ,, one Red Gurnard 



Fig. 54-55. ,, two Streaked Gurnards 



Fig. 56. ,, one Sapphirine Gurnard . 



Fig. 57-63. ,, several Lumpenus, various sizes . 



Fig. 64-65. ,, two Sand-eels 



Fig. 66. ,, one Conger 



Fig. 67-69. ,, three Fresh- water Eels 



