SUMMARIZED OBSERVATIONS 



369 



Mean frequency per cent of "other species", all Blue and Fin whales: 



Cocconeis imperatrix 17-2 Gyrosigma arcticuni 9-0 



Navicula sp. ? 19-5 Lycmophora lyngbyei 11-3 



December, 1930 

 Total whales dealt with 115, of these one was a Humpback ?, and the rest Blue and Fin whales. 



Mean frequency per cent of "other species", all Blue and Fin whales: 



Cocconeis imperatrix 13-2 Gyrosigma arcticum 



Navicula sp. ? 12-3 Lycmophora ly?igbyei 



4.4 

 8-8 



January, 193 1 



The total number of whales taken was 91 , and of these 89 were examined externally. Of these 1 1 

 were Humpbacks, one was a Southern Right whale and one a Sperm cJ. Six of the Humpbacks were 

 ?? and 5 cJ(?; one ? bore a film with normal Coccotieis ceticola, and another a film composed of 

 C. zvheeleri; on 5 ?? and 3 (J(J Lycmophora lyngbyei grew thickly on Coronula shells. The large 

 Sperm S was infected with Navicula sp. ? and in places with Cocconeis ceticola also (of slightly ab- 

 normal proportions); another Navicula sp. was also present: spots apparently representing recent 

 infection showed spores and small-type frustules of C. ceticola, and an apparently pathological 

 condition of the epidermis. No skin diatoms were seen on the Southern Right whale. 



