6 
Family — ASTRORHIZI DiE . 
Genus — PELOSINA, Brady. 
Pelosina iiemispilerica, sp. nov. 
(Plate II, Figs. 2a, b.) 
Description . — Test somewhat irregularly flask- shaped, flattened on one 
side, convex on the other. Aperture, a short, but probably originally pro- 
longed, tubular neck. Structure of test apparently composed of fine sandy, 
mud, in which are embedded various coarser bodies, such as fragments of 
shells, sand-grains, and other foraminiferal tests. Length, P4 mm.; breadth 
1-07 mm. ; thickness, about *5 mm. 
Observations. — The above species most nearly resembles P. rotundata, 
Brady, 1 but differs essentially in having a distinctly flattened, and a convex 
side. This appears to he its first occurrence as a fossil ; but as it is likely to 
be easily overlooked, it may yet be found in various beds of later ages. 
Occurrence. — P. hemispheric a was found in the decomposed limestones 
from Wollong and Pokolbin No. 3. 
Genus — IIYPEBAMMINA, Brady. 
Hyperammina vagans, Brady. 
(Plate II, Fig. 1.) 
Hyperammina vagans, II- B- Brady, 1879, Quart. Journ. Micr. Soc., vol. XIX, N.S., p. 33, 
PI. Y, Fig. 3. 
II. Vagans, Brady, Haeusler, 1883, Quart. Journ. Geol. Soc., vol. XXXIX, p. 26, PI. II, Figs 2-6. 
II. Vagans, Brady, Howchin, 1888, Journ. Boy. Micr. Soc., p. 535, PI. VIII, Fig. 3. 
Observations.— Our specimen is attached to a spicular body, around 
which it is loosely coiled. The walls are arenaceous and of somewhat coarse 
structure. The average diameter of the tube is about ‘175 mm. Dr. Brady 
stated that the recent specimens range between the diameters of ‘05 and 
‘2 mm. 
The genus Hyperammina occurs in fossiliferous strata from the Silurian 
onwards; and the present species is already known from strata as old as the 
Carboniferous Limestone (N. of England). 
Occurrence. — Bare in the decomposed limestone from IVollong. 
Rep. Chall. vol. IX, 1884, p. 236, PI. XXV, Figs. 18-20. 
