PLATE 95. 



Hyalonema (Oonema) densum Lendenfeld. 

 Figures 1-20. 



1. — Radial section through the dermal membrane and the underlying part of the choanosome; magni- 



fied 30; phot. Zeiss, planar 20 mm. 



2. — Radial section through the gastral membrane and the underlying part of the choanosome; magni- 



fied 30; phot. Zeiss, planar 20 mm. 



3. — View of part of the gastral surface; magnified 8; phot. Zeiss, planar 50 mm. 



4. — View of the specimen; reduced 1: 0.89; phot. Zeiss, anastig. 480/412 mm. 

 5-10. — Micramphidiscs; magnified 500; phot. Zeiss, H. I. apochr. 2, compens. oc. 6: 



5-8, large micramphidiscs; 



9, 10, small micramphidiscs. 

 11, 12. — Apical views of the lateral rays of gastral pinules; magnified 300; phot. Zeiss, apochr. 8, 



compens. oc. 12. 

 13-16. — Side-views of superficial pinules; magnified 300: 



13, 14, gastral pinules; phot. Zeiss, apochr. 16, compens. oc. 12; 



15, a dermal pinule; phot. Zeiss, apochr. 8, compens. oc. 12; 



16, a gastral pinule; phot. Zeiss, apochr. 8, compens. oc. 12. 



17-20. — Superficial pinules; magnified 50; phot. Zeiss, apochr. 16, compens. oc. 2: 



17, 18, gastral pinules; 

 19, 20, dermal pinules. 



