SCANDINAVIAN CETACEA. 



273 



one, and is much wider than the latter. The body tapers considerably backwards under the 

 dorsal fin, and is very much compressed near the caudal fin, with sharp upper and lower edges 

 extending between the lobes of the caudal fin. The middle furrows on the lower side of the 

 fore part of the body extend backward to about the middle of the body. The throat in the older 

 animals is extensile, and constitutes a kind of a bag.^ The eyes are placed immediately above 

 and somewhat before the angles of the mouth. The blowers are placed somewhat before the 

 eyes, and converge somewhat forward. The orifices of the ears are very small, and on the foetus 

 were placed 2l" behind the eyes. The pectoral fins, the free external part of which is in length 

 about equal to jth of the length of body, are placed somewhat nearer to the edge of the belly than 

 to the dorsal edge, and are at the end of the anterior third of the body. They are lancet- 

 shaped and pointed, and with smooth edges. The anterior edge is arcuate, and the posterior has an 

 obtuse angle near to the base. The dorsal fin is placed at the beginning of the posterior third of 

 the body, and in older specimens is of a different form from that of the foetus, in which it is lower 

 and more obtuse. In the older animals it is rather high, obtusely pointed, and directed somewhat 

 backwards, with the fore edge convex and the posterior one concave. It was, on a female of 

 26' length, 1' 3" high, and 1' 8," long at the base, according to Eschricht. The caudal fin is 

 rather deeply forked behind, and its width in the foetus was ^th of the length of the animal. It 

 is but little wider in the adult.^ The vent is under the posterior part of the dorsal fin. 



T/ie colour is above blue-black, beneath white. The pectoral fins are, on the upper side to 

 the greater part of their length, white ; and at the base, the point, and the posterior edge, black. 

 There is a well-defined Hmit between the black colour at the base and the white. They are 

 of the same colour on the lower side as on the upper. The caudal fin above is of the same 

 colour as the upper side of the body ; beneath white with black edges. The baleen is yellowish 

 white. 



T/ic skeleton. I have taken the following measurements from a skeleton in the Zoological 

 Museum of this University. The skeleton is of a young female with loose vertebral epiphyses, 

 and is from the vicinity of Bergen, Norway. 



Measurements. 



Length of skeleton ; in a straight line 



„ skull ; „ 



Width of „ across temporal bones 



„ beak at the base 



„ „ middle 



Length of „ „ 



„ one lower jawbone along the curve on the outer side 

 Circumference of ,, at the middle . 



Height of processus coronoideus behind 

 Distance from processus coronoideus to hinder edge of condylus 



. 23' 





. 5' 



n 



. 3' 



nr 



1' 



9" 



1' 



U' 



3' 



4r 



5' 



51' 



. 1' 







3" 





11" 



^ In the fcetus there are some bristles (5 — 7) on each side of each jaw near the borders of the 

 mouth. 



" A pregnant female, the skeleton of which, 25' in length, is preserved in the museum in Bergen, 

 had, according to Kroyer, the caudal fin 7'3i" wide. 



35 



