152 Transactions. — Zoology. 



that afternoon while the cast was being made. The cast is 

 now exhibited in the University Museum. 



Colour : In its general colouration it agrees pretty closely 

 with the description given by Von Haast (Trans., xiii.). The 

 upper surface of head and back is dark-grey — practically 

 black, including dorsal fin and dorsal surface of the caudal 

 fluke. The belly is pure snow-white (which after exposure to 

 rain and air during twenty-four hours became a bluish- white). 

 The lower jaw is very dark-grey, fading rapidly to white a few 

 inches below the gape. Behind the angle of the mouth the 

 colour is paler grey. The pectoral limb dorsally is grey, deep- 

 ening to black along the posterior margin ; but the tint gets 

 lighter towards the anterior margin, which is white. The line 

 of junction between grey and white is about on a level with 

 the mouth, the base of the pectoral limb, and the caudal fluke. 

 But the tone of the grey varies : Above the base of the 

 pectoral are wavy lines of dark and light grey, obliquely 

 vertical, with the upper ends directed backwards, one of which 

 is particularly noticeable, starting from the axilla upwards 

 and backwards ; a second, more or less parallel to this, lies 

 above the base of the pectoral. About midway along the 

 body the darker tint is more extensive, invading the generally 

 lighter grey, so as to form an irregularly oval darker patch 

 about midway between pectoral and dorsal fins. 



Mouth : The roof of the mouth is bright-pink ; the baleen, 

 which forms but a narrow band on each side — only about 

 If in. broad at its broadest — is purplish-pink for about half 

 its depth, the free ends — that is, about lower half— being pink. 

 But during the day these colours changed to pink and almost 

 white respectively. The base of the baleen is yellowish. 



The tongue is pink ; the back of mouth pink, with a few 

 black pigment spots. The tongue itself is margined laterally 

 along the region that is free (which is Sin. in length) with 

 thin fleshy folds, irregular in shape and size, vertically dis- 

 posed, overlapping one another; soft, flexible, and no doubt 

 an aid in capturing food. 



Hair : There are about fifteen hairs on each side of the 

 face, and evidence, in the presence of follicles, of five or six 

 more. On the chin, or anterior rounded extremity of the 

 lower jaw, are two vertical rows of hair-follicles, from most 

 of which a single short white hair protruded. Each pit is 

 very distinctly marked, owing to the very dark-grey colour 

 round its margin. The two rows, one of which presented 

 seven the other eight follicular pits, are about ^in. apart, 

 though the upper pair of pits are distinctly more widely 

 separated. There is a space of about J in. between each pit 

 of a vertical row. The bristles, of which I counted six on the 

 right and four on the left side, issuing from the upper pits of 



