486 



NOTES AND EXHIBITS. 



Professor David, who communicated Mr, Mawson's paper in the 

 author's absence, showed a number of lantern slides in illustration 

 thereof. 



Mr. D. G. Stead exhibited (1) a particularly fine example of a 

 curious and rarely obtained scorpjenoid fish, Glyptauchen jpandu- 

 ratus Richardson, measuring 155 mm., which had been recently 

 captured by means of a trammel-net on South Reef at the 

 entrance to Port Jackson. (2) A specimen of the curious noto- 

 thenioid, Centropercis nudivittis Ogilby, upon which the follow- 

 ing observations were offered : — " This is the third record of the 

 occurrence of this species, which was described by Ogilby in these 

 Proceedings in 1895 (Second Series, x. 322) from a single speci- 

 men measuring 78 mm., obtained at Maroubra Bay : the second 

 known specimen was obtained during the trawling operations of 

 the " Thetis " in 1898, 8 miles south of Maroubra; and this 

 measured 103 mm.; while the example exhibited, 66 mm. in 

 length, was captured in a hauling-net during 1903 at Terrigal, 

 a little to the north of Broken Bay." And (3) a number of 

 specimens of Amia roseig aster Ramsay and Ogilby, respecting 

 which Mr. Stead stated that, while examining some of them for 

 the purpose of specific determination, he had discovered that a 

 large percentage had their mouths packed with ova and "young 

 fry " in all stages of development (some of which were exhibited). 

 This pointed to the interesting fact that these fishes use the 

 mouth as an incubating chamber, in the same manner as do the 

 catfishes of the genus Galeichthys and some others. It was also 

 pointed out that Ogilby, in 1888, exhibited before the Society a 

 specimen of the allied Ainia guentheri Castlenau, "whose mouth 

 was crammed with ova,"* and suggested the possibility of this 

 species having contracted the habit of hatching out the ova in 

 the mouth. 



* These Proceedings, (2) iii. 1889, p. 1559. 



