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of the Fishery Board for Scotland. 80 
Y —LItTERATURE. 
The following are some papers in which the otoliths of fishes are more 
or less specially dealt with :— 
Dr. Rerpiscn.—‘‘ Ueber die Hizahl bei Plewronectes platessa und die Alters- 
bestimmung dieser Form aus den Otolithen.” Wissensch. Meeresuntersuch., 
1899. Neue Folge Bd. 4, Abthlg. Kiel, p. 231. (This work I have not © 
seen. ) 
Dr. C. Fryp.—‘‘Die Otolithen der Fisch in Bezug auf ihre Bedeutung fiir 
Systematic und Altersbestimmung.” Dissertat. Kiel, 1901. (I have not 
seen this paper.) 
Dr. J. T. Jengins.—‘‘ Altersbestimmung durch Otolithen bei den Clupeiden.”’ 
Wissensch. Meeresuntersuch., 1902. Neue Folge Bd. 6, Abthlg. Kiel, p. 83. 
J. T. CunnincHam.—‘‘ Zones of Growth in the Skeletal Structures of the 
Gadidz and Pleuronectide.” Twenty-third Annual Report of the Fishery 
Board for Scotland, Pt. III., p. 125, et sec., pls. vii.-ix., 1905. 
Dr. W. Watiace.—“‘ Preliminary Investigations on the Age and Growth-rate of 
Plaice.” International Investigations, Marine Biol. Assoc, Report, pp. 
199-225, pl. i., 1895. 
Dr. Apo_¥F SEVERIN JENSEN.—‘‘On Fish Otoliths in Bottom Deposits of the 
Sea.” Meddelelser fra Kommissionen for Havunderségelser. 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 7'wentieth 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 ; w=upper margin of otolith. 
PLATE: I.) 4. 
Fig. 1-10. Earstones of Codfishes, various sizes. slightly enlarged. 
Fig. 11-13. * Lythe, 5 : : Bs 
Fig. 14-16. - Coal-fishes, _,, , : 3 
Fig. 17-18. a (?) Ling, ‘3 ; d ¥ 
Fig. 19-26. ae ing, ay , § 
Fig. 27. ae a Greater Forkbeard, ; : oie 
PLATE I. B. 
Fig. 1-8. Earstones of Lesser Forkbeard, various sizes . slightly enlarged. 
Fig. 9-12. ai several 3-Bearded Rocklings, various sizes 
Fig. 13-17. a several 4-Bearded Rocklings, F if 
Fig. 18. > one Flounder, . ; : Ai 
Fig. 19-25. ‘i several Lemon Dabs, various sizes i 
Fig. 26-29. ad four Witch Soles, Absa ae Ss 
Fig. 30. Fe one Scald-fish, ” . » 
Fig. 31-32.— Me two Megrims : : : » 
Fig. 33. » one Turbot : : : » 
Fig. 34. 3 one Black Sole : : : a 
Fig. 35-36. bis two Solea variegata : ; ve 
Fig. 37-41. % several Solenettes, various sizes . 
Fig. 42-43. _ two Miiller’s Topknots. : A 
Fig. 44-45. 5 two Argentines - : A 
Fig. 46-52. a several Grey Gurnards, various sizes is 
Fig. 53. a3 one Red Gurnard : : 5 
Fig. 54-55, a two Streaked Gurnards . ; = 
Fig. 56. is one Sapphirine Gurnard . : " 
Fig. 57-63. :, several Lumpenus, various sizes . >. 
Fig. 64-65. fe two Sand-eels : : > 
Fig. 66. #3 _ one Conger : : ” 
Fig. 67-69. es three Fresh-water Hels. ‘ ; 
