178 DISCOVERY REPORTS 



INTERNAL 

 There is no note on the internal parasites relating to whales Nos. 503 and 1020. It is 

 recorded that no worms were found in No. 1019. Intestinal parasites were, however, 

 present in whale No. 3560. They appeared to be the familiar trematode, Ogmogaster sp., 

 and the Tetrabothriid, Tetrabothrius affitiis, usually found in Blue and Fin whales. 



FOOD 



Little information has been gathered as to the food of the species from the present 

 series of whales. The stomachs of whales Nos. 1019 and 3560 were empty, but that of 

 No. 509 is recorded as containing some fairly fresh food [krill, Eiiphausia superba] and a 

 lot of darkish fluid. The stomach and oesophagus of No. 1020, a calf, were full of fresh 

 looking milk. The writer has recorded elsewhere (Matthews, 1932) how the Southern 

 Right whale feeds on shoals of the pelagic Grimothea post-larva of Munida gregaria off 

 the coast of Patagonia. 



GENITALIA 



THE MALE 

 The penis of whale No. 503 was pigmented, and was noted as "blunt with a kind of 

 short, blunt flagellum". It would thus appear to diff'er considerably in structure from 

 that of the Balaenopterid and Sperm whales. The testis measured no x 50 x 36 cm. 

 The penis of whale No. 1020 was completely retracted. The genital groove was com- 

 paratively very long, being 83 cm. in length ; starting as a shallow groove it gradually 

 deepened as it ran backwards (Plate XIII, fig. i). The anus is well separated from this 

 groove and lies nearly a metre posterior to it in the adult. Collett (1909) gives a photo- 

 graph of a Northern Right whale, with penis extruded, which well displays the length 

 of the genital groove. 



THE FEMALE 



The genital aperture, as in the Sperm whale, occupies a common groove with the 

 anus (Plate XII, fig. 2; Plate XVI, fig. i). Immediately in front of it lies a large 

 unilobular clitoris. There was no vaginal band or tag in whale No. 3560, and there is 

 no note on the subject from whale No. 10 19. 



The uterine cornu in whale No. 10 19 was 33 cm. across and was noted as not much 

 congested. This whale was lactating. 



Whale No. 3560 was in anoestrus and the ovaries were resting. They contained four 

 old corpora lutea. 



The ovaries of whale No. 1019 were large. One contained seven corpora lutea b, one 

 8-5 X 7 X 6 cm., and one 3x2-5x2 cm. There were five others, all very old and 

 resorbed. There was one protruding follicle 15 mm. in diameter. The other ovary con- 

 tained six corpora lutea b, one 3-5 x 3 x 2-5 cm., and another 3x3x2-5 cm. The 

 other four were very old. This ovary contained tiny follicles only. 



The large corpus luteum in the first ovary was that of the pregnancy that had recently 

 terminated in parturition. The other recent corpus luteum and the two in the other 



