. The Canadian field-naturalist. 46 The Canadian Vol. 81. Figure 5. Field sketch of a stranded dolphin, probably Stenella euphrosyne. of part of the cranium and the rostrum of a large male, one tusk of which had broken off in life, and an almost complete skull of a smaller animal, probably a female. The latter was unusual in possessing two small tusks in one normal-sized socket. Measure- ments of the skulls show them to lie well within the range of present day eastern arctic specimens. Another incomplete male skull found in 1964 proved to be slightly longer but a little narro
. The Canadian field-naturalist. 46 The Canadian Vol. 81. Figure 5. Field sketch of a stranded dolphin, probably Stenella euphrosyne. of part of the cranium and the rostrum of a large male, one tusk of which had broken off in life, and an almost complete skull of a smaller animal, probably a female. The latter was unusual in possessing two small tusks in one normal-sized socket. Measure- ments of the skulls show them to lie well within the range of present day eastern arctic specimens. Another incomplete male skull found in 1964 proved to be slightly longer but a little narrower than the largest present day eastern arctic walrus skulls. Cetacea Family Balaenopteridae. Balaenoptera muscuhis, blue whale. Mr. G. MacAlpine showed us a colour transparency of a large whale approximately 85 feet long which was washed ashore on the north beach in February 1958. Its great size, when considered together with the prominent ventral grooves shown in the photograph, leave little doubt that it was a mature blue whale. Family Physeteridae. Pbyseter catodon, sperm whale. On February 6, 1964, we observed from the air a partly decomposed old male sperm whale washed up on the north beach of the east spit. We later confirmed this identifica- tion from the ground. Family Phocaenidae. Phocaeim phocae7ia, common or harbour porpoise. On June 17, 1961, we found the carcass of a porpoise on the hard sand flat south of Wallace Lake. The small size suggested it was a young of the year. Erskine (1954) mentions seeing porpoises once at sea, and also many stranded on the south beach. Family Delphinidae. Globicephala tnelaena, pilot whale, pothead, blackfish. On June 20, 1961, we found the skeleton of an adult pilot whale on the north beach at about the mid point of the island. This may have been a further member of a herd of 18 whales which was stranded along a mile of the north beach near the radio sta- tion on October 2, 1959. Mr. MacAlpine showed us a transparency of one of th
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