E PLATE 84. 
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Hyalonema (Oonema) bianchoratum pinulina Lenpenrexp. 
Figs. 1-10, 15, 26, 27, 30-32 " specimen a. 
Figs. 11-14, 16-25, 28, 29 —specimen b. 
: 1.— Part of a transverse section of one of the Palythoa polyps attached to the stalk o 
magnified 30; phot. Zeiss, planar 20 mm. : 
2.— Part of a section of the choanosome of specimen a; magenta; magnified 30; ph 
20 mm.: a, flagellate chambers. 
3-13.— Small macramphidiscs from the gastral zone, magnified 100; si Zeiss, apochr. 
oc. 6: . 
3-10, of specimen a; 
11-13, of specimen b. 
14.— Transverse section of one of the polyps imbedded in the body of specimen b; magni 
Zeiss, planar 20 mm. : 
15.— A small micramphidise of specimen a; magnified 2000; u. v. phot. Zeiss, q. monochr. 1 
16-25.— Small micramphidises of specimen b; magnified 500: 
16, 21, phot. Zeiss, apochr. 4, compens. oc. 12; : 
17-20, 22-25, phot. Zeiss, H. I. apochr. 2, compens. oc. 6. 
26, 27.— A terminal anchor of a small macramphidise of specimen a seen from within; m 
phot. Zeiss, apochr. 8, compens. oc. 12: 
26, focussed lower (on the base of the teeth); 
27, focussed higher (on the tips of the teeth). 
28-32.— Side-views of small macramphidises; magnified 500; phot. Zeiss, apochr. 8, compens 
28, a macramphidise of specimen b, focussed lower (the shaft in focus); 
29, the same macramphidise focussed higher (the tip of the upper teeth in focus) ; 
30, a macramphidise of specimen a, focussed lower (the shaft in focus) ; 
31, the same macramphidise, focussed higher (the tip of the upper teeth in focus) ; 
32, another macramphidise of specimen a. 
