. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Dr. H. Burmeister on a new Porpoise. 133 of 25 centim. in front of the fin, as a single line of moderate spines ; but soon another line begins on each side, so that in the beginning of the fin there are already three lines of spines. These three lines are continued over the whole rounded anterior margin of the fin, and are augmented on both sides by other small spines irregularly scattered, so that the whole number of spine-lines in the middle of the fin is five. Towards the e
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Dr. H. Burmeister on a new Porpoise. 133 of 25 centim. in front of the fin, as a single line of moderate spines ; but soon another line begins on each side, so that in the beginning of the fin there are already three lines of spines. These three lines are continued over the whole rounded anterior margin of the fin, and are augmented on both sides by other small spines irregularly scattered, so that the whole number of spine-lines in the middle of the fin is five. Towards the end of the fin they become smaller, and on the rounded tip of the fin there are no spines at all. From the hinder margin of the dorsal fin to the notch of the tail-fin is 54 centim. The tail-fin is 39 centim. broad, and each fluke 20 centim. long on the anterior margin. This margin is some- what curved backwards, and the hinder margin sinuated. The underside of the body is somewhat more curved and extended than the upper side, and the tail more descending. The anus is situated under the beginning of the dorsal fin, 70 centim. distant from the notch of the tail-fin. The individual seems to be a very young one, because all vestiges of genital organs are wanting in the exterior. The anus has a dozen radial folds, of which the largest, 6 centim. long, runs forwards; all are very deep, and transversely ridged. The pectoral fin is falcated, 26 centim. long and 10 broad. At its proximal end there are many fine ridges in the skin, and in the middle part are ridges indicating the finger-bones beneath. The skull proves that the animal is a very young one, and that it has come perhaps only to half its natural size; because all the bones are very weak, not perfectly ossified, and the vomer entirely cartilaginous. It has the general figure of the skull of the European Phoccena, dif- fering principally in the form of the hinder part of the intermaxil- lary bones, which is more abruptly elevat
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