Dolphins of the New-Zealand Seas. 107 



pectorals, which are small ; dorsal over tlie tail ; tail-lobes 

 large, falcate. — Knox. 



Hkull globular, with a slender conical beak. The intermaxil- 

 laries form thin linear callous plates, incurved over a deep groove 

 that extends back from the snout to the blow-holes, as in Dol- 

 phins ; they then expand to form a flat lunate area in front of 

 the blow-holes, and rise behind to form moderate knob-like 

 crests that are separated by a notch, owing to the feeble de- 

 velopment of the nasals. The maxiilaries commence as lateral 

 plates some distance from the top of the beak, but expand 

 behind into slightly concave areas. The blowers are straight, 

 vertical, and almost equally developed. 



Before I had seen Berardius Arnouxii I took this for the 

 young of that species ; but it differs in the presence of crests 

 over the blow-holes, feeble nasals, narrower beak, and more 

 compressed teeth. 



The tympanic bones of the two species have a close resem- 

 blance. 



A second, fragmentary skull, of exactly the same form and 

 dimensions as that described above (see also Trans. N.-Z. Inst, 

 vol. iii.), has been lately obtained in a sandy deposit near 

 Wangauui. 



16. Berardius Arnouxii^ Duv. 



Ziphioid whale with skull like a Porpoise. 



The specimen in the museum has the first three cervicals 

 united, and the fourth united by the neural arch. 



The preceding species has the first two thoroughly united 

 and the third by its spines ; the rest are free, not united, as 

 might be inferred from the description (Trans. N.-Z. Inst. iii. 

 p. 129), where the term combined cervical vertebree referred 

 only to the manner in which they arc sketched. 



Remarhs on some of the Sjjecies in the foregoing paper. 

 By Dr. J. E. Gray, F.E.S. &c. 



This paper was received from Dr. Hector yesterday morning 

 (December 26, 1872). As it is marked "abstract," probably it 

 refers to a paper that he has sent to the New-Zealand Institute. 

 He docs not say, in his letter on other subjects which accom- 

 panies it, what I am to do with it ; but I suppose it is sent for 

 publication in the ^Annals,' as others received in the same way. 



It contains many most valuable observations, and adds con- 

 siderably to our knowledge of the Cetacea of the southern 

 regions ; it is very interesting as confirming the existence of 

 the genera Qrampiis and Beluga in the southern or Antarctic 



