714 DR. H. BURMEISTER ON A NEW FIN-WHALE. [Nov. 28, 
an obtuse angle on the hinder part of the circumference; towards 
the glenoid cavity it becomes much thicker, and has here the thick- 
ness of the diameter of that cavity. On the outside (fig. 1) the 
surface is somewhat excavated, with the indication of an obtuse 
radial crest on the fore part of the hinder half; on the inside the 
surface is flatter, and has five long and three short, obtuse radial 
elevated lines. The fore margin is thin, with the indication of an 
obtuse angle in the upper half, and under that angle are two descend- 
ing small spines. The hinder margin is somewhat curved inwards, 
but more straight in the middle of its course. The acromion is a 
very large compressed process, which is somewhat broader and 
rounded at the end, and with two obtuse prominences on the under 
margin near to the base. The upper margin is very sharp, and 
continued on the outside of the bladebone as a sharp prominent 
crest. The coracoid process is half the size of the former, and 
Fig. 2. 
obliquely truncated at the end. The glenoid cavity (fig. 2) is a 
broad ellipse of a longitudinal diameter of 14 inches, and a trans- 
verse of 11 inches, but somewhat more curved on the outer than the 
inner side. The whole bladebone measures 6 feet from before back- 
wards, and 3 feet from above downwards. If a horizontal line be 
drawn from the anterior to the posterior angle, the upper part of 
the vertical line which it intersects is 1 foot 11 inches high, the lower 
part 2 feet Linch, The acromion is | foot 73 inches long, and 7 to 
