DISTRIBUTION AND GENERAL NOTES ON THE SPECIES 3ii 



had begun. There is thus a good chance that the figures may be fairly representative, though the 

 chances of infection by these parasites might vary with the seasons. A few data obtained farther 

 south, at other times, do not suggest this, and in the main confirm the picture given by the good 

 December figures. The latter only are considered here. The results are given in summarized form m 

 Table 28, and the increase in percentage of female fish infected with increasing length is shown 

 graphically in Fig. 27. 



Table 28. Incidence of infection by Lernaeoceridoe, Merluccius hubbsi, 

 north of 50° S, December 1931 



It will be seen that female Merluccius hubbsi showed a steady increase of ' percentage mfection' with 

 these parasites as they grew longer (and older), and marked increase in the highest length group for 

 which adequate figures are available. Females appear to be more than twice as often mfected as are 

 males. 



Zl-30| 31-40 I 4-1 -50 I 51-60 | 61 "70 1 71-80 

 LENGTH CLASSES _ CMS 



Fig. 27. Increase in infection by Lernaeoceridae with increase in length (and age) of female 



Merluccius hubbsi. 



