1865.] DR. H. BURMEISTER ON A NEW PORPOISE. 229 
face of the skin is transversely striated with fine excavated lines, like 
the inside of the human hand. The upper lip is somewhat shorter 
than the under, and the figure of the mouth, on both sides, rather 
curved behind; the length of the opening is 8} centim. on each 
side. From the hinder corner of the mouth the eye is distant 
7 centim., and from the eye to the beginning of the pectoral fin is 
16 centim. The opening of the nose has the form of a broad trans- 
verse ridge, somewhat curved forwards ; it is 3 centim. broad, and 
16 centim. distant from the top of the upper lip. The figure of the 
whole body is fusiform, but much more elongated behind than be- 
fore ; it measures from the top of the upper lip to the notch of the 
tail-fin 162 centim., and the circumference of the thickest part of the 
body, at the middle, is 102 centim. 
Fig. 1. Fig. 2. 
The distance from the nasal aperture to the beginning of the dor- 
sal fin is 84 centim. ; but the elevation of this fin is so gradual, that 
it is difficult to say exactly where it begins. The figure of the whole 
fin is triangular, somewhat curved forwards near the end, and its 
height 14 centim. (see fig. 1). This curving forwards is a peculiar 
and very distinguishing character of the Species, as is also the 
clothing of the anterior margin of the fin with small spines. These 
spines are not different from the skin, but elevations of the skin itself, 
like small angles, of an elongated-oval form. I have figured part of 
the middle (where the spines are most elevated) as seen from above 
(see fig. 2), to show that every spine is surrounded by a ridge of the 
skin, and that from the sides of the lateral spines other ridges begin. 
Some small spines begin in the middle of the back, at the distance 
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. 
