310 NOTES AND EXHIBITS. 



Sword-fish, Xiphias gladius Linn., which was found dead on 

 Cronulla Beach, near Sydney, recently, and is now in the Museum 

 collection. The species represented were (3) Fistulicola plicatus 

 E.ud., a cestode infesting the lower intestine, and frequently 

 producing fistuke on the outer part of the wall, as a result of 

 penetration; (4) Tetrarhynchiis sp., an elongate larval form, 

 infesting the muscles; (5) Tetrarhynclius sp., a small species, 

 with four comparatively long and delicate rostella, found on the 

 mesentery; (6) Tetrarhynchus sp., a rather large solid form, with 

 short, thick, rounded rostella, also from the mesentery; (7) 

 Gysticercus sp., a remarkable cyst with a well defined laminated 

 membrane like that of the common hydatid, Ecldnococcus poly- 

 morphus Dies., taken from the liver; (8) Ascarls incurva Rud., 

 a nematode infesting the stomach. None of the above-mentioned 

 parasites had been recorded previously from the.se hosts in Aus- 

 tralia. He also exhibited photographs, and a series of potato- 

 tubers which showed the presence of rhizomorph strands on the 

 outside, and of hyplipe within the tuber, belonging to the Agaric, 

 ArmillariameUea{TQntQV?iQ\d, N.S.W.). Some of the tubers were 

 destroyed by the fungus. 



Dr. Cuthbert Hall exhibited a hybrid seedling from seed 

 gathered from a cultivated specimen of Acacia Baileyana. It 

 had been found that this Acacia, when growing near Acacia 

 decurrens, gave about 20 % of hybrids, which differed materially 

 from either parent. The hybridisation ma}^ probably have been 

 efi'ected by bees, both specimens flowering at the same time. As 

 the two parent- species occur in widely separated localities, the 

 natural barrier of the Great Dividing Range intervening, this 

 has a peculiarly interesting bearing on Jordan's Law. 



Mr. T. Steel exhibited a quantity of the dead bodies of an ant 

 Iridomyrmex nitidus Mayr, from Herbert River, Queensland, 

 found in March, 1908, in numerous little heaps scattered over 

 the surface of the ground. The heaps varied from a few dozen 

 bodies to many thousands. The ants were busy bringing the 

 bodies and placing them on the heaps. Could this mortality have 



