SCALE OBSERVATIONS OP THE SQUETEAGUE AND PIGFISH. 



317 



ANNULI. 



(i) Annuli are edges of laminae, and are not composed of circuli occurring closer 

 together; (2) they do not represent periods of retarded growth; (3) they probably 

 represent differences in degree of calcification. 



CLASSIFICATION. 



(i) Spines, not being permanent, have little classificatory value; (2) radii have 

 none; (3) shape, alone, has none; (4) size has none; (5) the foregoing characters, collec- 

 tively, may be of some value in classification; (6) circuli, appearing as the most constant 

 character, are probably of some classificatory value. 



LIFE HISTORY. 



(i ) If the squeteague grows more in summer than in winter, it leaves no trace of such 

 a difference on its scales; (2) this fish probably spawns in its third year; (3) the maxi- 

 mum age is not less than 8 years, the oldest fish caught being of this age; (4) an average 

 adult fish of this species is 32 cm. long; (5) little has been learned of winter habits 

 from scales. 



Table i. — Showing Growth Each Year of Cynoscion regalis, Lengths Calculated from 



Growth Bands on Scales." 



Number. 



First 

 year. 



Second 

 year. 



Third 

 year. 



Fourth 

 year. 



Fifth 

 year. 



Sixth 

 year. 



Seventh 

 year. 



Eighth 

 year. 



Sex. 



Age. 



Weight. 



Total 

 length. 



3 



4 



S 



6 



7 



8 



9 



xo 



xz 



Z3 



13 



14 



IS 



16 



17 



18 



19 



30 



at 



33 



33 



34 



3S 



36 



37 



38 



39 



30 



31 



33 



33 



34 



35 



36 



37 



38 



Average 



cm. 



24.44 



32. 10 



19.80 



13-44 

 16.01 

 19.44 

 19.8s 

 13-97 

 16.33 

 32-37 

 19-43 

 22. 16 

 17-68 

 18-70 

 26- 71 

 26-77 

 26-86 

 IS-7S 

 18-34 

 22.30 

 23- OS 

 13-77 

 21-96 

 14-49 

 21-39 

 19-87 

 11.67 

 21.71 

 24.04 

 17.41 



22. 06 

 13.60 

 22.03 

 17-67 

 30.41 



13-57 

 IS- 86 

 24-82 



19.91 



C7n. 



31-77 



30.80 

 23-52 

 18.08 

 23- SO 

 30.30 

 30.61 

 22-87 

 40- Si 

 23-33 

 28-69 

 24-00 

 27. 12 

 34-95 

 34-88 

 33-97 

 18.38 

 24.43 

 28.50 

 27-33 

 18-37 

 26.33 

 21-43 

 27-93 

 25-39 

 17-51 

 28.95 

 30.77 

 26. II 

 26.47 

 21. 76 

 26.37 

 33. 56 

 25-78 

 22.28 

 35-55 

 32.36 



cm. 

 38.09 



38-5 



23.0 



20. 



26. 

 36. 



24. 

 30. 



47- 

 29. 

 31- 

 30. 

 33- 

 40. 

 39. 

 41. 



27-50 



31-59 

 26-02 

 29-47 

 25-18 

 31-59 

 26-50 

 33-35 

 38.26 

 37.50 

 32.64 

 29.80 

 26. 29 

 30-71 

 35-38 

 29-00 

 26-00 

 3S-24 

 37-33 



25-20 

 31.61 

 42.84 

 27-31 



39-35 

 34-86 

 45-98 



31-72 

 43.97 



48.6s 



56.00 



55-59 

 31.11 



56-99 



32-84 

 50-50 

 47-35 

 46-63 

 48- 10 



56.61 

 57.99 

 55-13 



60.65 



65.50 



36-71 



31-13 

 39-47 



36-79 

 33-50 



38.03 



38.53 

 43-43 

 45-19 

 38-08 



30-50 

 50.60 

 50.00 



46.69 

 42.28 



55-50 

 59-15 



65.50 



Years. 

 3 



1 

 3 

 3 

 6 

 8 

 5 

 4 



gm. 



439.0 



75-9 



524-5 



198-0 



373-0 



1,370.0 



823.0 



191.0 



248.0 



1,788.0 



270.0 



299.0 



795-0 



1,176-0 



1,602-0 



1,900-0 



2,635-0 



85.0 



184-0 



184-0 



Sio-o 



163-0 



445- o 



340-0 



398.0 



170.0 



370.0 



I,I3S-o 



1,361-0 

 436-0 

 227.0 

 163.0 

 799-0 

 184.0 

 227.0 

 143.0 



1,580.0 



2, 260.0 



26.31 



31.84 



38.48 



46. 23 



46.96 



56.00 



cm. 

 38.3 



33. I 



38.5 

 38.0 

 31-4 

 56.0 

 46.0 

 37.4 

 30.5 

 57-0 

 31-0 



31-3 

 45-5 

 50- 5 

 S6-S 

 s8-o 

 65.5 



31. X 



37-5 

 38. s 

 38.0 

 36.0 

 38.0 

 33-5 

 31-5 

 36.5 

 30.5 

 50.5 

 50.0 

 38.0 

 30.0 

 36.3 

 30. S 

 37-5 

 39.0 

 36.0 

 55-5 

 65- 5 



38-0 



o The measurements of length in this paper are from tip of snout to the end of the shortest rays, middle of the caudal fin. 

 97867°— vol M^\r. oj 



