Hectok. — New Zealand Cetaceans. 



1.^9 



A. 



B. 



c. 



18 



17 



17-5 



12 



11 



10-5 



3-6 



3-5 



3-5 



2 



2 



2 



45 



46 



44 



47 



48 



42 



Measurement of Skulls in Inches. 



Total length 



Length of beak ... 



Width at notch ... ... ... 



Width at middle of beak ... 

 Teeth ... 



The following is abridged from Forster's description of the Porpoise, to 

 which I attribute these skulls : — 



Teeth - Body straight, round, thickest behind ; head rounded, shelving 

 in front ; beak, pointed, straight, attenuated ; lower jaw longest ; dorsal fin in 

 middle of back, triangular falcate ; tail-lobes sub-falcate ; tail attenuated, 

 keeled above and below ; pectoral lanceolate, scarcely as long as the beak. 



Greenish brown or rust colour above, white beneath, a white spot on the 

 dorsal and pectorals. Length, 6 feet. (Gray, I.e., 248.) 



I have frequently seen a porpoise answering to this description, as far as 

 could be judged from a boat, in Queen Charlotte Sound and Blind Bay. 



CLYMBNIA NOV^ ZEALANDI^. 



Co-w-fish. 

 Delpliinus novce-zealandicE, Q. and G. Gray, I.e. 246. 



PL II. 



The skull of a large porpoise cast ashore at Waikanae appears to belong to 

 this species, but having a flat palate it must be removed from the genus 

 Delphinus to Clymenia. It resembles G. euphrosyne, but has a more slender 

 beak and a larger number of teeth in the lower jaw. 



Skull rounded behind, forehead sloping rather abruptly ; crests and nasal 

 bones prominent and rough ; maxillaries spongy, expanded, posterior wing 

 with horizontal and ascending areas ; intermaxillaries elevated, callous, a little 

 expanded in the middle of the beak, not united, and wide apart in front. 



Triangle bounded by a callous ridge, very rough, extends beyond the 

 hinder teeth ; blower small, equal to half the width at notch ; palate flat ; 

 length of symphysis of lower jaw equals one-third the width at the notch. 



Length ... ... ... ... ... 19 inches. 



Beak 



Width at notch 



Width in middle 



Teeth 



11-5 

 4-5 

 3 



44 

 47 



