FISHES OF NEW ZEALAKD. 77 



rathei' catting edge, but without prominent cusp; origin of dorsal 

 behind the inner posterior angle of the pectoral ; posterior portions of 

 both dorsals and anal produced, deeper than the central portion ; 

 lower lobe of caudal sinuated, central portion the lowest ; second dorsal 

 nearly equal to the fii-st, and terminating over the centre of the anal 



Above ash grey, usually more or less spotted with white, below 

 pale gi'eyish white. 



Common, much eaten by the Maoris ; South Pacific. 



LAMNID^. 



Two dorsals, the first opposite to the space between the pectorals and 

 ventrals ; without spine ; an anal fin ; no nictitating membrane ; mouth 

 crescent-shaped, inferior ; nostrils not confluent with the mouth ; gill 

 openings generally wide ; spiracles none, or minute. 



Lamna. 



Second dorsal and anal very small ; a pit at the root of the caudal, 

 which has the lower lobe much developed ; side of the tail with a keel ; 

 no spiracles ; mouth wide ; teeth large, lanceolate, not serrated, some- 

 times with additional basal cusps ; gill openings very wide. 



Temperate and tropical seas. 



124. LAMNA GLAUCA. Miill. and Henle. CM. 



Tiger Shark. Mako, 



Scymniis, Sp. Cat. Col. Mus. L. glauca, Giinth., VIII., 391. 



Peroral portion of snout as long as the longitudinal axis of the cleft 

 of the mouth, pointed ; angle of the mouth midway between the gill 

 opening and nostril ; teeth ^ on each side, long, lanceolate, -with sharp 

 lateral edges, without basal cusjis ; the third tooth on each side of the 

 upper jaw is much smaller than those next to it ; dorsal fin opposite to 

 the middle of the interspace between pectoral and ventral ; pectorals 

 falciform (Giinth.) 



Cape of Good Hope, Japan. 



The shark from which the Maoris obtain the teeth with which they 

 decorate their ears, is, probably, this species, but I have seen teeth only. 



