646 RHIZOPODS OF SYDNEY AND LISMORE, 



without processes. Orifice 6-lobed, without any distinct, regular 

 edging of flints or plates, lobes very deep, ovate, narrowed 

 within, rounded or somewhat flattened behind, the angles 

 between the lobes thrust forward into the orifice as broad, blunt 

 processes, leaving only a clear space equal to about one-third of 

 the diameter of the orifice. The tips of these processes are 

 chitinous, and so darkened that, if they are composed of small 

 flints or plates, the latter cannot be seen. 



Length 120-150, breadth 110-120; orif. 42-G3/X. 



Lismore (335). 



Yar. CRUCIFERA, n.var. (PI. xxxvi., f.2). 



Test as in the type, but orifice 4-lobed. The lobes are occa- 

 sionally nearly the same as in the type, rounded behind (some- 

 times with a slight angle at the back) and narrowed in front, 

 but generally they are much deeper, cuneato in shape, the central 

 aperture being only about 10/x wide. 



Length 120-137, breadth 105-123; orif. 32-53//. 



Fairfield; Lismore (260, 335). 



Var. TRILOBULATA, n.var. (PL xxxvi., f.3). 



Test smaller, as far as my observations go, globose or very 

 broadly ovate. Orifice 3-lobed, lobes deep, cuneate, flat behind, 

 narrowed a little inwardly, angles between the lobes merely 

 broad, triangular wedges. 



Length 85-90, breadth 78-90; orif. 32-42//. 



Lismore (327). 



DiFFLUGiA BRKVicoiJ^A Cash. (PI. xxxvi., f.4). 



Length 112, breadth 106; orif.47//. Lismore (308). 



Cash, I.e., ii., p. 38, PL xix., f.l2, 13. I have noted one speci- 

 men which, though a little larger, seems to agree very well with 

 the figures given by Cash. It is spherical, inflated immediately 

 above the narrow neck, the test composed of circular, fusiform, 

 bacillar, or irregularly rectangular plates filled in with fine 

 granules. At the same time, I think this species doubtfully 

 distinct from the next; my specimen of each is from the same 

 piece of swamp. 



