189 



ft. in. 



Breadth of sample at base O 9 



Projection of sample over upper lip O 6 



Centre of eye to snout 9 5 



„ of eye to posterior angle of blowliole 3 5 



Posterior of blowholes in advance of a line joining 



the eyes O 9 



Eye to eye 6 10 



Centre of eye to base of nearest baleen 1 8 



Snout to spiracles 7 9 



Each spiracle in length O 10 



Length of blind slit between spiracles O 8į 



Betvveen near points of spiracles O lį 



Between divergent points of spiracles O 9 



Ear behind eye 2 9 



Length of depression of external ear O lį 



Breadth of depression of external ear O į 



Diameter of perforation of ear O ^ 



Length of reproductory organ, including anus .... 3 O 



Length of mainmary sUts O 10 



The accompanying drawings, in which every point was deter- 

 mined by the measurements, give a perfectly correct idea of the pro- 

 portions of the animal. Consequently, further dimensions may be 

 taken from them, due allowance being made for the eurves. 



The external ear, which was difficult of detection, consisted of an 

 aperture capable of admitting a quill, situated in a Tery shallow 

 groove of the dimensions given above. When the blubber was re- 

 moved, the aperture was continued, in the immediate vicinity of a 

 strong glandular substance, of a cylindrical form, 2 inches in dia- 

 meter, passing into the skull. 



The bloįvholes were situated in a hoUovv on the summit of a low 

 rounded eminence, immediately in front of a depression directly over 

 the eyes. When first seen, this latter depression was hardly appa- 

 rent, and seems to owe its existence partly to the falling in of the 

 integuments after death. The relative position of the spiracles is 

 given in PI. XLV. fig. 1 . Betvveen the spiracles was a shallow groove, 

 at first sight resembling a third opening, beginning 1 inch before the 

 anterior commissures of the spiracles, and continued to an imaginary 

 line joining their posterior extremities. 



The sides of the blowholes, which lay in close juxtaposition, could, 

 from the elasticity of the parts, be separated to the extent of 3 or 

 4 inches, without affecting the extremities of the openings. 



PI. XLV. fig. 2, shows a section of one of the spiracles, laidopen 

 through the commissures, together with the retracted pad or valve, 

 which, when set free, closes the nares, as represented in fig. 3. The 

 pad consisted of a tough, fatty substance, and was retracted bv a 

 strong musele, which had its attachments in a deep grooye in the 

 bone of the upper jaw. When the spiracles were partially excised, 

 the working of this beautiful apparatus was easily exhibited by 

 grasping with the hands the strong musele, and drawing out the 



