356 DESCRIPTIVE CATALOGUE OF AUSTRALIAN FISHES, 



long labial folds. Teeth small, numerous, similar in both, jaws, 

 arranged like pavement, obtuse, or with, very indistinct cusps. 



Temperate and Tropical Seas. 



1081. Mustelus antarcticus, Gunth. 



Gunth., Cat. Fishes, VIII., p. 387.— Casteln. Proc. Zool. Soc. 



Vict, Vol. 1, p. 216. 



Snout rather obtuse, not much produced, the length of its 

 prseoral portion being somewhat less than the distance between 

 the angles of the mouth. The upper teeth with a rather cutting 

 edge ; but without prominent cusp. Origin of the dorsal fin 

 behind the inner posterior angle of the pectoral. Colour uniform 

 grey. 



Tasmania, Port Phillip, Port Jackson. 



Family II. LAMNIDiE. 



The first dorsal fin opposite to the space between the pectoral 

 and ventral fins, without spine, an anal fin. No nictitating 

 membrane. Mouth crescent-shaped, inferior ; nostrils not con- 

 fident with the mouth. Gill-openings generally wide. Spiracles 

 none or minute. 



Genus Lamna, Cuv. 



The first dorsal fin opposite to the space between the pectoral 

 and ventral fins, without spine ; the second dorsal and the anal 

 fins very small. A pit at the root of the caudal fin. which has 

 the lower lobe much developed. Side of the tail with a keel. 

 No nictitating membrane. No spiracles. Mouth wide. Teeth 

 large, lanceolate, not serrated, sometimes with additional basal 

 cusps. Gill-openings very wide. 



Temperate and Tropical Seas. 



1082. Lamna glauca, Mull. & Henle. 

 Oxy rhino, glauca, Mull. & Henle, p. 69, pi. 20. 



