274 



DISCOVERY REPORTS 



DECEMBER -JANUARY 1926-7 36' 

 39" 38' 37* 



35' 



S4" 



coast, very few being taken at the outlying stations. This is also shown in Fig. 143. In 

 the December-January survey they were met with farther out, and on the evidence avail- 

 able comparatively few were against the 

 coast. 



We had felt some doubt regarding the 

 validity of our estimation of the E. superba 

 distribution, since there is a tendency for 

 more of them to be taken in the nets at 

 night stations owing to their vertical mi- 

 gration at dusk into the upper layers. 

 This factor, as explained on p. 211, does 

 not appear to be so important in the con- 

 sideration of E. superba as it does in that 

 of E.frigida, since superba does not make 

 anything like so extensive a vertical mi- 

 gration as does frigida. We have, however, 

 set out the stations in March and early 

 April 1926 in two groups in the list below, 

 those within 25 miles of the coast and 

 those farther out, and we have put in 

 heavy type the stations taken in the hours 

 of darkness and the numbers of E. superba 

 taken at those stations. This clearly shows 

 that the distribution here is quite inde- 

 pendent of the distribution of the night 

 stations. 



Inner stations 



EUPHAUSIA SUPERBA 



36° 35° 



St. 23 

 St. 24 

 St. 25 

 St. 31 

 St. 32 

 St. 38 

 St. 40 

 St. 41 

 St. 43 



o 



3.°7° 

 48 



3.805 



1,582 



10,716 



4 T 5 



1,980 



216 



FIN WHALES 



Outer stations 



St. 26 2 



St. 33 o 



St. 34 o 



St- 35 o 



St. 36 12 



St. 37 3 



St- 44 3 



Mackintosh and Wheeler (1929, p. 363) 

 in their report on the Blue and Fin whales 



BLUE WHALES 



Fig. 141. Euphausia superba and whale distribution in 

 December 1926 (whale distribution from Kemp and 

 Bennett, 1932). 



