242 PROFS. J. H. SCOTT AND T. J. PAKKER ON A 



cm. ft. in. 



Length of flipper along lower border 48 17 



Greatest width of flipper 14 5o 



From anterior end of upper jaw to anterior end of 



dorsal fln 297 9 9 



Length of base of dorsal fin 33 11 



Vertical height of dorsal fin 20-5 8 



Breadth of caudal fin 112 3 8 



Girth immediately cephalad of caudal fin ... 56 1 10 



Girth at middle of dorsal fin, excluding the latter . 201 6 7 



Greatest girth, 233 cm. (7 ft. 8 in.) from snout .249 8 2 



Girth at axilla 233 7 8 



From anterior end of lower jaw to anterior end of 



genito-anal fissure ........ 325 10 75 



Length of genito-anal fissure 48 17 



From posterior end of genito-anal fissure to anus . 6'3 2'5 

 From anterior end of genito-anal fissure to anterior 



end of mammary cleft 23 9 



Length of mammary cleft 10 4 



The head of our specimen was scarcely so convex as in that figured by von Haast \ 

 but considerably more so than that of the individual figured by Burmeister^ under the 

 name of Zijihiorhynchiis cryptodon. (See PI. XLVIII. fig. 1.) 



Under the throat were three folds on each side, running obliquely backwards and 

 upwards ; of these the central one was much the largest and best marked. Von Haast 

 describes only a single gular fold on each side. 



As is seen in fig. 2 (PI. XLVIII.) the middle of the caudal fin was marked by a 

 slight projection, not shown in either von Haast's or Burmeister's figure. 



The distance between the eye and ear given in the table of measurements was taken 

 along an oblique line, the auditory aperture lying 4-6 cm. (1-8 in.) below the level of 

 the eye. The blow-hole was, as usual, concave forwards. 



In the undisturbed position of the parts the lips of the genito-anal fissure were in 

 contact, so that neither the urino-genital nor the anal aperture could be seen. When 

 the lips were separated as in fig. 3 (PI. XLIX.) the vulva was seen to be surrounded by 

 an irregular ring of caruncles, while between it and the anus was a low rounded 

 longitudinal ridge. 



Colovr. The entire back and the lateral aspect above the level of the flipper, with the 

 exception of an ill-defined dark brown longitudinal strip between the back and tlie side, 



' Trans. N. Z. Inst. xii. (1879) pi. S ; Proo. Zool. Soe. 1380, pi. 2.3. 

 ' Ann. & Mag. N. H. 3rd scries, vol. xvii. (1S66) pi. 3. 



