PLATE 108. 
Hyalonema (Prionema) crassum LENDENFELD. 
Figures 1-17. 
1-9.— Superficial pentactines; magnified 30; phot. Zeiss, planar 20 mm.: 
1, 3-5, 8, 9, hypodermal pentactines; 
2, 6, 7, hypogastral pentactines. 
10-13.— Hexactine megascleres; magnified 30; ee Zeiss, planar 20 mm. 
14, 15.— Two smooth macramphidises; magnified 500; phot. Zeiss, apochr. 8, compens. oc. 12. 
16, 17.— Parts of smooth macramphidises; magnified 500; phot. Zeiss, H. I. apochr. 2, compens. oc. 
16, an anchor, focussed high, on the tips of the uppermost teeth; 
17, a little more than half of a macramphidisc, focussed on the centre of the shaft. 
ye 
a Pr, > & ee &, _ 
