The editor of the Sorö edition identifies this with the nor-caper (_Balæna glacialis_), though he thinks it possible that the fin-fish (_Balænoptera laticeps_) may be meant (p. 125). Another kind is called the sperm whale. These are toothed whales, though the teeth are barely large enough to be carved into fair-sized knife handles or chess men. They are neither fierce nor savage, but rather of a gentle nature, and so far as possible they avoid the fishermen. In size they are about like those that I mentioned last. Their teeth are so numerous that more than seventy can be found in the head of a single whale of this sort. Still another species is called the right whale;[206] this has no fins along the spine and is about as large as the sort that we mentioned last. Sea-faring men fear it very much, for it is by nature disposed to sport with ships. Footnote 206: _Balæna mysticetus_; also called bowhead or Greenland whale. There is another kind called the Greenland shark,[207] which is peculiar in this, that it has caul and fat in the abdomen like cattle. The largest of these whales grow to a length of thirty ells at most. Footnote 207: It is possible that the basking sharks are meant rather than the Greenland sharks; they are larger than the Greenland sharks, but do not seem to be common in the Arctic waters. There are certain varieties that are fierce and savage toward men and are constantly seeking to destroy them at every chance. One of these is called the “horse whale,” and another the “red comb.”[208] They are very voracious and malicious and never grow tired of slaying men. They roam about in all the seas looking for ships, and when they find one they leap up, for in that way they are able to sink and destroy it the more quickly. These fishes are unfit for human food; being the natural enemies of mankind, they are, in fact, loathsome. The largest of this type never grow more than thirty or forty ells in length. Footnote 208: The “horse whale” and the “red comb” have not been identified.