306 AUSTRALIAN FOKAMINIFKKA, II., 



Heads, at a depth of 80 fathoms, and described by one of us 

 (E. J. G.) in the Records of the Australian Museum (Vol. vi., 

 Partiv.). The}^ also show considerable affinity to those 

 dredged at a depth of 100 fathoms, 16 miles east of WoUongong. 

 The similarity is striking in connection with the Globigerinidm, 

 Discorhina and Pulvirtidiiia, which aie very abundant in all these 

 dredgings. The WoUongong material, however, differs from the 

 other materials in the abundance of arenaceous and semi- 

 arenaceous foraminifera. 



I'ruacatidina pi'aechicta, which is characteristic of warm 

 Avaters and occurs on our coasts in all localities north of Sydney-, 

 is present in these dredgings, but is absent in the shallower 

 water off WoUongong. The differences between the material 

 dredged off WoUongong and off Sydney Heads is probably to be 

 ascribed to the different nature of the bottom in the two places. 

 Off WoUongong the bottom is largely basaltic, and off Sydney 

 it is sandstone. 



In the Sydney Heads material about 70 % is foraminiferal. 

 Glauconitic casts are fairh' abundant, but not to the same extent 

 as in the WoUongong material. The foreign material consists of 

 fragments of gastropod shells, pteropod .shells, ostracods, spicules, 

 and polyzoa. 



The Mollusca from 300 fathoms off Sydney Heads have been 

 described by Mr. C. Hedley in the Records of the Australian 

 Museum (Vol.vi., Part 3). 



4. Foraminifera from Lyell Bay, Xeiv Zealand, collected on the 

 beach by Mr. A. Ilamiltori. 

 The material consifsts chiefly of gastropod shells, lamellibranch 

 shells, polyzoa and coralline alga3. The following foraminifera 

 were noticed : — 



Family ASTRORHIZID^. 

 Subfamily RHABDAMMININ^. 



1. Brachysiphon corbuliformis Chapman, Trans. X. Z. Inst. 



xxxviii. 1905, pi. iii., figs 2a, 26, 3. 



2. ASCHEMONELLA CATENATA Norman. 



