648 RHIZOPODS OF SYDNEY AND LISMORE, 



DiFPLUGiA CORONA ^yallich. 

 Length of body 144, breadth loG, orif, 84, proc. 64 x 36/i. 

 Auburn; Wyrallah. 



Var. FoLEYANA, n.var. (PI. xxxvi., f.8). 



Test mitriform, expanded above, crown flattened, sides arching 



to the orifice, which, as usual, is without any rim or constriction. 



Dome furnished with four, long, conical, diverging processes. 



End-view compressed. Length 133, breadth 140, proc. 38/x long. 



Lismore, swamp near Foley's. 



DiFFLUGIA TUBERCULATA V. SPH.ERICA, n.var. (PL XXXvi., f.9, 10). 



Test of the same character as the type, but spherical, with a 

 very decided collar. Orifice 6 or 7-lobed, with the usual angular 

 lobation, sides of lobules straight. 



Length 115-127, breadth 104-118, orif. 32-52, collar 8-12/x high. 



Auburn (68); Lismore (332, 337). 



Cf. Penard, Faune Rhiz., p. 293, where he saj^s of the test, 

 ^'- tmijoiirs ovoid''' \ ours, on the contrary, are globose, with a much 

 deeper collar. The test in this species cannot be mistaken, being- 

 covered all over with very low swellings of equal size, which are 

 best seen when the surface is a little out of focus. The bases of 

 these swellings seem to be outlined with flinty plates and grains 

 formed into distinct rows. The whole of the test is composed 

 of a conglomeration of minute, flinty grains, spicules, rectangles 

 and irregular plates, the largest of which, as a rule, are not over 

 10/A, and these rare. 



Var. NODOSA, n.var. (PI. xxxvi., f.ll). 



Test as in var. splup.rica, but furnished behind with four, low 

 rounded tumours set crosswise. Breadth across the four tumours 

 1 to I diam. of the test. Tumours about 20/x broad, 8-1 0/x high. 



Length 100-132, breadth 90-120, orif. 32-48, collar 8-12/x high. 



Lismore (337, 340); Coogee. 



Var. coRONATA, n.var. (PI. xxxvi., f.l2). 



Test as in var. sphcerica, but with four conical processes set 

 crosswise behind. Breadth across the processes about i to § 

 diam. of the test. 



Length 127, breadth 127, orif. 63/a. Lismore (335). 



