654 RHIZOPODS OF SYDNEY AND LISMORE, 



Difflugia lithoplites v. pidcherrima (PL xxxv., f.l5), thickened 

 plates or cushions with, apparently, a hollow in the centre, which 

 causes the outer zone to appear specially ref ringent. Small plates 

 of this description sometimes entirely compose the test, both in 

 Dijfiuyia and Lesquereusia. Cf., L. carinata, infra. 



Var. CAUDATA, n.var. (PL xxxviii., f.l). 



Test very regular, with an almost circular outline : orifice 

 circular, simple, jjlaced somewhat on the slant, tube projecting 

 beyond the body for about half the diameter of the orifice. Dome 

 furnished with a conical process set somewhat oblicpiely, eccen- 

 trically below the orifice. Test composed always of rough Hints, 

 orifice not specially margined. 



Length 127-174, breadth 106-123, orif. 38-48, tail 17-21//. 



Coogee(58); Lismore (308, 314). 



Both L. sinralis and L. jui'cissica, as do^ermined abo\ e, are 

 common here, and widespread. This form is not unconnnon. I 

 have never seen a similar test of L. jurassica. 



Var. iN^QUALis, n.var. (PL xxxviii., f.2). 



Test very much smaller than usual, dome flattened above, and 

 humped towards the side of the orihce. Cf., L. incequalis Cash, 

 iL, p.72, PL23, f.l2. 



Length 91, breadth 91/x. Lismore (316). 



Lesquereusia carinata, n.sp. (PL xxxviii., f.3). 



Test smooth, beautifully regular in curvature. Orifice circular, 

 simple, tube projecting for about one-third the diameter uf the 

 orifice. Dome furnished with a slight, concave keel, or conical 

 projections connected by a keel, tangential to the surface, equal 

 to about three-fourths the diameter of the test. Test entirely 

 composed of minute, round, cushion-like pellets, 2-3/x in diameter, 

 orifice edged with a le^ el series. 



Length 133, breadth 100, orif. 36, keel 72 broad, 13/a high. 



Lismore. 



The plating in this species is something of the same character 

 as in L. modesta Rhumbler, but the thickened plates are here 

 mere pellets. 



