34 " THETIS " SCIENTIFIC RESULTS. 



the genus Galeus, where now placed. I£ future research should 

 suggest the necessity of uniting the genera Mustelus, Cuvier, and 

 Galeus, Rafinesque, the latter, being the older name, would still 

 have priority. 



GALEORHINUS, Blainville. 



GALEORHINUS AUSTRALIS, Madeay. 



School Shark. 



Galeus australis, Macl., Proc. Linn. Soc. N.S.W., vi., 1881, p. 354. 

 McCoy, Prod. Zool. Vict., Dec. vii., 1882, pi. Ixiv., fig. 2. 



Stations 20, 21. 



An example of this species measuring three and a half feet in 

 length was taken in the trawl in 23-30 fathoms, off Morna Point, 

 to the south of Port Stephens, the most northerly recorded habitat. 

 A second specimen, but thirteen inches in length, was obtained a 

 little further south in the Newcastle Bight at a depth of 28-40 

 fathoms. 



Family SPHYKNID^. 



SPHYRNA, Rafinesque. 



SPHYRNA LEWINI, Lord. 

 Hammer-headed Shark. 



Zygcena leivini, Lord in Griffith, Ann. King., x., 1834, p. 640, 



pi. L. 

 Zygcena malleus, McCoy, Prod. Zool. Vict., Dec. vi., 1881, pi. Ivi., 



fig. 1. 



Station 51. 



In 15 fathoms off Shoalhaven Bight we netted a large number 

 of these sharks. They were, however, all of small size, ranging 

 from one to four feet in length. Curiously enough, this was the 

 only occasion on which they entered the trawl. 



The Hammer-headed Shark was the species most frequently 

 seen, and when " Shark, oh," was called, it was generally to observe 

 one of these brutes swimming alongside the " Thetis." The 

 largest example noticed (off Seal Rocks) was computed to be about 

 twelve feet in length. On one occasion one of the sailors, having 

 .strung some skate, hung them over the stern in order to wash off 



