236 LILLJEBORG ON THE 



beginning of the posterior third of the body, is tapering and tolerably elongate, and, when the animal 

 is seen from above, strongly tapering and compressed towards the caudal fin ; but when seen from 

 the side almost of equal width from the vent to the caudal fin, although, of course, much lower 

 than the fore part of the body. The height of the body, at the beginning of the dorsal fin, was 

 2' 10" (Rhenish) in the specimen described by Schlegel, which was a female, 16' 3" (Rhenish) 

 long; the dorsal fin was 1' 11" high; length of the pectoral fins from the bottom of the 

 hinder notch at their base 2', and the width of the caudal fin 4' 7". On one of the specimens, 

 of which the skeletons are preserved in the museum in Bergen, and the fins of which had 

 the strongest resemblance to those described by Schlegel, the dorsal fin was 2' 8" (Norwegian) 

 high along its anterior edge from the base, and its base 2' 4" (Swedish) long. Pectoral fins 

 2' 9.1" long (according to Dr. Koren). The colour is, according to Schlegel, above, black, changing 

 into all the colours of the rainbow ; beneath, porcelain white. Dorsal and pectoral fins black, also 

 the caudal fin above. The under surface of the latter white with black edges. There is on each 

 side, above and behind the eyes, a rather large, oblong, white spot, and a similar but smaller spot 

 on the lower side behind the base of each pectoral fin. There is a purple streak on each side of 

 the back, immediately behind the dorsal fin, and obliquely forward and down on each side of the 

 base of the fin, which streak terminates in front in a very narrow line.^ The white colour on the 

 lower side of the body occupies the entire lower jaw, extends up the sides of the head nearly to 

 the eyes, and forms a narrow line on the borders of the upper jaw. It forms a large curve back- 

 wards on the sides of the body behind the dorsal fin, and above the genital furrow. The black 

 colour of the upper side extends, below the dorsal fin, to a portion of the sides of the belly, covers 

 the hinder part of the body between the anus and the caudal fin, and has a forward extension on 

 each side of the genital furrow. 



After receiving the necessary information from Dr. Koren in regard to the two skeletons pre- 

 served in the museum in Bergen, I made the following observations : — Both are males, and 

 appear, from what has been stated, to be from old specimens. One is 16' 11" in length, the other 

 15' 8i". The head of the latter is 3' long and 1' 9" wide over the anterior dilated part of ossa 

 zygomatica and frontis. The beak is 1' 6" long, lOf wide at the base, and 9=" wide at the 

 middle. The teeth row on each side of both jaws 1' 2|" long. Lower jaw 2' éf long. Scapula 

 r I" long and 1' 6|" wide. Acromion Sf long, and of an irregular form. Os humeri 7," long, 

 from the point of tuberculum raajus, and 4\" wide at the middle. Ulna 71" long and 3|" wide 

 at the lower end. Sternum 1' 6" long. The teeth are 12 on each side in the upper and the 

 lower jaw, and all have a black spot on the outside in the cortical substance, whereby a black line 

 is formed along the outer side of the row of teeth. The front teeth with an obtuse and worn- 

 down point, the others acute. The tubercle formed by the nasal and frontal bones, behind the 

 blowers and vomer, is but slightly elevated, and is directed backwards. The intermaxillary bones 

 before the blowers rather sharply concave forward, most narrow on the middle of the upper side 

 of the jaw, wider both forward and backward, and in shape resembling those of the preceding 

 species. The maxillaries extend farther back than the intermaxillary bones, but leave a part of 

 the frontal bones bare between them and the occipital bone. The form of the head is the same 

 in both skeletons. The first 4 cervical vertebræ are united by their processus spinosi in the 



' This line may be caused by a scratch in the epidermis. It was not observed on the 

 specimens captured in the vicinity of Bergen. 



