Geodinella robusta Lendenfeld. 



Figs. 1,3. — v;ir. megasterra Lendenfeld. 



Figs. 2, 8. — var. megaclada Lendenfeld. 



Figs. 4-7, 9-11. — var. carolae Lendenfeld. 



1. — Group of sterra.sters in a spicule-preparation of var. megasterra ; magnifieil 100; phot., Zoiss, apochr. 

 16, compens. oc. 6: 

 a, sterrasters of the usual ellipsoidal form lying flat: b, a three-lobed sterraster lying flat. 

 2. — Group of sterrasters in a spicule-preparation of var. megaclada; magnified 100; phot., Zeiss, apochr. 

 16, compens. oc. 6: 

 a, sterrasters of the usual ellipsoidal form lying flat; b, a three-lobed sterraster lying flat; 

 c, a sterraster of the usual ellipsoidal form standing on one of its longer narrow sides. 

 3. — Group of euasters in a centrifugal spicule-preparation of var. megasterra; magnified 300; phot., 

 Zeiss, apochr. 4, compens. oc. 6: 



a, oxyaster; b, strongylosphaerasters. 

 4 — Part of a section of the choanosome of the specimen of var. carotae from t'harlotte Sound; congo- 

 red, aniline-blue; magnified 350; phot., Zeiss, hom. imm. 2, compens. oc. 2: 



a, surface view of a flagellate chamber with sparse collar cells; b, sectioned flagellate chambers. 

 5. — Group of sterrasters in a spicule-preparation of the specimen of var. carolae from Charlotte Sound; 

 magnified 100; phot., Zeiss, apochr. 16, compens. oc. 6: 



a, sterrasters lying flat; c, a sterraster standing on one of its longer narrow sides. 

 6. — Radial section of the specimen of var. carolae from Charlotte Sound; magnified; i)hot., Zeiss, 

 planar 50: 



a, cortex (sterraster-armour) ; b, choanosome; c, wide choanosomal canals. 

 7. — Part of a section of the choanosome of the specimen of var. carolae from Charlotte Sovuid; congo- 

 rcd, aniline-blue; magnified 300; phot., Zei.ss, apochr. 4, compens. oc. 6: 

 a, ova: b, connective tissue forming capsules enclosing the ova. 

 8. — Group of strongylo.sphaerasters in a centrifugal spicule-preparation of var. tneyaclada; magnified 



300; phot., Zei.ss, apochr. 4 compens. oc. 6. 

 9. — Group of strongylosphaerasters in a centrifugal spicule-preparation of the specimen of var. carolae 



from Charlotte Sound; magnified 300; phot., Zeiss, apochr. 4. compens. oc. 6. 

 10. — Group of euasters in a centrifugal spicule-preparation of the choanosome of the .specimen of var. 

 carolae from Charlotte Sound; magnified 300; phot., Zeiss, apochr. 4, compens. oc. 6: 

 a, large oxyaster; b, small oxyaster; c, small sphaeraster. 

 11. — Part of a section of the choanosome of the specimen of var. carolae from Charlotte Sound; congo- 

 red, azure; magnifie<l .300; phot., Zeiss, apochr. 4, compens. 6: 

 a, flagellate chambers. 



